New York Metropolitan Flora

Key to the genera of Asteraceae

List of Asteraceae Genera

References to Asteraceae

• Ahlgren, C. E.; Ahlgren, I. F. 1981. Some effects of different forest litters on seed germination and growth. Canad. J. Forest Res. 11: 710-714.
• Altom, J. V. 1996. Factors affecting eclipta (Eclipta prostrata) seed germination. Weed Technol. 10: 727-731.
• Andersen, M. C. 1993. Diaspore morphology and seed dispersal in several wind-dispersed Asteraceae. Amer. J. Bot. 80: 487-492.
• Anderson, L. C. 1994. A revision of Hasteola in the New World. Syst. Bot. 19: 211-219.
• Anonymous 1871. Baccharis halimifolia. Bull. Torrey Bot. Club 2: 7.
• Appelquist, W. L.; Moerman, D. E. 2011. Yarrow (Achillea millefolium L.): a neglected panacea? A review of ethnobotany, bioactivity, and biomedical research. Econ. Bot. 65: 209-225.
• Applequist, M. B. 2002. A reassessment of the nomenclature of Matricaria L. and Tripleurospermum Sch. Bip. (Asteraceae). Taxon 51: 757-761.
• Applequist, W. L.; Moerman, D. E. 2011. Yarrow (Achillea millefolium L.): a neglected panacea? A review of ethnobotany, bioactivity, and biomedical research. Econ. Bot. 65: 209-225.
• Arenes, J. 1950. Monographie du genre Arctium L. Bull. Jard. Bot. Etat Bruxelles 29: 67-156. (In French)
• Arriagada, J. E. 1998. The genera of Inuleae (Compositae; Asteraceae) in the southeastern United States. Harvard Papers in Botany 3: 1-48.
• Arthur, M. A.; Paratley, R. D. 1998. Single and repeated fires affect survival and regeneration of woody and herbaceous species in an oak-pine forest. J. Torrey Bot. Soc. 125: 225-236.
• Ashmun, J. W.; Brown, R. L.; Pitelka, L. F. 1985. Biomass allocation in Aster acuminatus: variation within and among populations over 5 years. Canad. J. Bot. 63: 2035-2043.
• Baagoe, J. 1974. The genus Guizotia (Compsitae): a taxonomic revision. Bot. Tidsskr. 69: 1-39.
• Babcock, E. B. 1947. The genus Crepis. Pt. 1: The taxonomy, phylogeny, distribution, and evolution of Crepis. Pt. 2: Systematic treatment.
• Babcock, E. B.; Stebbins, G. L. 1937. The genus Youngia.
• Bain, J. F.; Jansen, R. K. 1995. A phylogenetic analysis of the aureoid Senecio (Asteraceae) complex based on ITS sequence data. Pl. Syst. Evol. 195: 209-219.
• Bais, H. P.; Ravishankar, G. A. 2001. Cichorium intybus L - cultivation, processing, utility, value addition and biotechnology, with an emphasis on current status and future prospects. J. Sci. Food Agric. 81: 467-484.
• Banovetz, S. J.; Scheiner, S. M. 1994. Secondary seed dormancy in Coreopsis lanceolata.
• Bard, G. E. 1952. Secondary succession on the piedmont of New Jersey. Ecol. Monogr. 22: 195-215.
• Barkley, T. M. 1962. A revision of Senecio aureus L. and allied species. Trans. Kansas Acad. Sci. 65: 318-408.
• Barney, J. N. 2006. North American history of two invasive plant species: phytogeographic distribution, dispersal vectors, and multiple introductions. Biological Invasions 8: 703-717.
• Barney, J. N.; DiTommaso, A. 2003. The biology of Canadian weeds. 118. Artemisia vulgaris L. Canad. J. Pl. Sci. 83: 205-215.
• Bartgis, R. 1991. Cypripedium candidum and six other additions to the known flora of Maryland. Castanea 56: 220-1.
• Bartgis, R. L.; Hutton, E. E. 1988. Additions to the known flora of West Virginia. Castanea 53: 295-8.
• Bartlett, H. H. 1906. The salt-marsh Iva of New England. Rhodora 8: 25-6.
• Baskin, C. C. et.al. 1998. Effect of seasonal temperature changes on germination responses of buried seeds of Agalinis fasciculata (Scrophulariaceae), and a comparison with 12 other summer annuals native to eastern North America. Plant Species Biol. 13: 77-84.
• Baskin, C. C. et.al. 1993. Afterripening pattern during cold stratification of achenes of ten perennial Asteraceae from eastern North America, and evolutionary implication. Plant Species Biol. 8: 61-65.
• Baskin, C. C.; Baskin, J. M. 1996. Role of temperature and light in the germination ecology of buried seeds of weedy species of disturbed forests: II. Erechtites hieracifolia. Canad. J. Bot. 74: 2002-2005.
• Bayer, R. J.; Starr, Julian R. 1998. Tribal phylogeny of the Asteraceae based on two non-coding chloroplast sequences, the trnL intron and trnL/trnF intergenic spacer. Ann. Missouri Bot. Gard. 85: 242-256.
• Bayer, R. J.; Stebbins, G. L. 1982. A revised classification of Antennaria (Asteraceae: Inuleae) of the eastern United States. Syst. Bot. 7: 300-313.
• Bazzaz, F. A. 1970. Secondary dormancy in the seeds of the common ragweed Ambrosia artemisiifolia. Bull. Torrey Bot. Club 97: 302-305.
• Beck, J. B. et.al. 2004. Is subtribe Solidaginae (Asteraceae) monophyletic? Taxon 53: 691-698.
• Belcher, R. O. 1956. a revision of Erechtites (Compositae) with inquiries into Senecio and Arrhenechthites. Ann. Missouri Bot. Gard. 43: 1-85.
• Bennington, C. C.; Stratton, D. A. 1998. Field tests of density- and frequency-dependent selection in Erigeron annuus (Compositae). Amer. J. Bot. 85: 540-545.
• Berti, F. et.al. 2005. Mutations of corolla symmetry affect carpel and steman development in Helianthus annuus. Canad. J. Bot. 83: 1065-1072.
• Bertness, M. D.; Gough, L.; Shumway, S. W. 1992. Salt tolerances and the distribution of fugitive salt marsh plants. Ecology 73: 1842-51.
• Bertness, M. D.; Winkler, K.; Chatkupt, T. 1992. Flood tolerance and the distribution of Iva frutescens across New England salt marshes. Oecologia 91: 171-8.
• Bertness, M. D.; Yeh, S. M. 1994. Cooperative and competitive interactions in the recruitment of marsh elders. Ecology 75: 2416-29.
• Bicknell, E. P. 1917. Baccharis halimifolia. Addisonia 2: 29-30.
• Biddulph, S. F. 1944. A revision of the genus Gaillardia. Res. Stud. State Coll. Wash. 12: 195-256.
• Bierner, M. W. 1972. Taxonomy of Helenium sect. Tetrodus and a conspectus of North American Helenium (Compositae). Brittonia 24: 331-355.
• Bierner, M. W. 1989. Taxonomy of Helenium sect. Amarum (Asteraceae). Sida 13: 453-459.
• Binns, S. E. et.al. 2001. Typification of Echinacea purpurea (L.) Moench (Heliantheae: Asteraceae) and its implications for the correct naming of two Echinacea taxa. Taxon 50: 1169-1175.
• Binns, S. E.; Baum, B. R.; Arnason, J. T. 2002. A taxonomic revision of Echinacea (Asteraceae: Heliantheae). Syst. Bot. 27: 610-632.
• Blake, S. F. 1921. Revision of the genus Acanthospermum. Contr. U. S. Natl. Herb. 20: 383-392.
• Boileau, F.; Crete, M.; Huot, J. 1994. Food habits of the black bear, Ursus americanus, and habitat use in Gaspesie Park, eastern Quebec. Canad. Field-Naturalist 108: 162-9. (French summary)
• Bolick, M. R. 1985. Cladistic analysis of Iva: a case in point. Taxon 34: 81-4.
• Bolick, M. R. 1983. Hennigian cladistics and the generic concept in Iva (Ambrosiinae, Heliantheae). Amer. J. Bot. 70(5)(suppl.): 99. (Abstract)
• Bonasera, J.; Lynch, J.; Leck, M. A. 1979. Comparison of the allelopathic potential of four marsh species. Bull. Torrey Bot. Club 106: 217-222.
• Bosy, J. L.; Reader, R. J. 1995. Mechanisms underlying the suppression of forb seedling emergence by grass (Poa pratensis) litter. Funct. Ecol. 9: 635-639.
• Bosy, J.; Aarssen, L. W. 1995. The effect of seed orientation on germination in a uniform environment: Differential success without genetic or environmental variation. J. Ecol. 83: 769-773.
• Bourn, W. W.; Cottam, C. 1950. Some biological effects of ditching tidewater marshes.
• Boutin, C.; Morisset, P. 1989. Study of the phenotypic plasticity of Chrysanthemum leucanthemum II. Demography. Canad. J. Bot. 67: 977-983. (In French)
• Boutin, C.; Morisset, P. 1988. Study of the phenotypic plasticity of Chrysanthemum leucanthemum. I. Groth biomass and reproduction. Canad. J. Bot. 66: 2285-2298. (In French)
• Braden, D. A.; Cialone, J. C. 1971. Characterization of two Galinsoga R. & P species from New Jersey by achene length/width ratio and the presence of marginal cotyledonary hairs. Bull. Torrey Bot. Club 98: 50-52.
• Brauer, J.; Geber, M. A. 2002. Population differentiation in the range expansion of a native maritime plant, Solidago sempervirens L. Int. J. Plant Sci. 163: 141-150.
• Bremer, K. 1994. Asteraceae, cladistics and classification. Timber Press, Portland, OR. , 752 pages. (For review see Rhodora 97(890):176-178. 1995.)
• Brouillet, L.; Simon, J. P. 1981. An ecogeographical analysis of the distribution of Aster acuminatus Michx. And A. nemoralis Aiton (Asteraceae: Astereae). Rhodora 83: 521-550.
• Burke, J. M. et.al. 2002. The potential for gene flow between cultivated and wild sunflower (Helianthus annuus) in the United States. Amer. J. Bot. 89: 1550-1552.
• Burnham, S. H. 1901. Field days of the Torrey Botanical Club. Torreya 1: 119-20.
• Cane, J. H.; Eickwort, G. C.; Wesley, F. R.; Spielholz, J. 1985. Pollination ecology of Vaccinium stamineum (Ericaceae: Vaccinioideae). Amer. J. Bot. 72: 135-142. (other genera discussed)
• Canne, J. M. 1977. A revision of the genus Galinsoga (Compositae: Heliantheae). Rhodora 79: 319-389.
• Canne, J. M. 1978. Circumscription and generic relationships of Galinsoga (Compositaea: Heliantheae). Madrono 25: 81-93.
• Carr, M. E. 1985. Plant species evaluated for new crop potential. Econ. Bot. 39(3): 336-45.
• Cerbah, M. et.al. 1999. Evolutionary DNA variation in the genus Hypochaeris. Heredity 82: 261-266.
• Cerbah, M. et.al. 1998. Molecular phylogeny of the genus Hypochaeris using internal transcribed spacers of nuclear rDNA: Inference for chromosomal evolution. Molecular Biology and Evolution 15: 345-354.
• Chambers, K. L. 2004. Taxonomic notes on Krigia (Asteraceae). Sida 21: 225-236.
• Chancellor, R. J. 1986. Decline of arable weed seeds during 20 Years in soil under grass and the periodicity of seedling emergence after cultivation.
• Cheplick, G. P. 2006. Seed rain, transient seeds banks, and seedling recruitment of annual on a coastal beach. J. Torrey Bot. Soc. 133: 379-392.
• Cheplick, G. P. 2005. Patterns in the distribution of American beachgrass (Ammophila breviligulata) and the density and reproduction of annual plants on a coastal beach. Plant Ecology 180: 57-67.
• Cheplick, G. P.; Aliotta, M. 2009. The abundance and size of annual herbs in a coastal beach community is relatedto their distance from seaside goldenrod (Solidago sempervirens). J. Torrey Bot. Soc. 136: 102-109.
• Cherniawsky, D. M.; Bayer, R. J. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae). I. Morphometric analyses. Canad. J. Bot. 76: 23-36.
• Cherniawsky, D. M.; Bayer, R. J. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae).II. Isozyme analysis and population genetic structure. Canad. J. Bot. 76: 1476-1487.
• Cherniawsky, D. M.; Bayer, R. J. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae). III. A taxonomic revision. Canad. J. Bot. 76: 2061-2075.
• Chester, E. W.; Wofford, B. E.; McKinney, L. E.; Campbell, D. 1996. Rare and noteworthy vascular plants from the Fort Campbell Military Reservation, Kentucky and Tennessee. Sida 17: 269-274.
• Chinnappa, C. C. 1981. Cytological studies in Krigia Asteraceae. Canad. J. Genet. Cytol. 23: 671-678.
• Christen, D. C.; Matlack, G. R. 2009. The habitat and conduit functions of roads in the spread of three invasive plant species. Biological Invasions 11: 453-465. (Microstegium vimenium, Rosa multiflora, Tussilago farfara)
• Clausen, J. et.al. 1948. Experimental studies on the nature of species. III. Environmental responses of climatic races of Achillea. Publ. Carnegie Inst. Wash. 581: pp..
• Clewell, A. F. 1971. A revision of Ageratina (Compositae-Eupatorieae) from eastern North America. Brittonia 23: 123-143.
• Cody, W. J. 1982. A comparison of the northern limits of distribution of some vascular plant species found in southern Ontario. Naturaliste Canad. 109: 63-90.
• Collier, M. H.; Rogstad, S. H. 2004. Clonal variation in floral stage timing in the common dandelion Taraxacum officinale (Asteraceae). Amer. J. Bot. 91: 1828-1833.
• Connolly, B. A. 2008. Six new vascular plant taxa for Connecticut. Rhodora 110: 354-358.
• Cook, R. E. et.al. 2009. A multivariate morphometric analysis of Solidago subsect. Glomeruliflorae (Asteraceae: Astereae). Botany 87: 97-111.
• Cook, R. E.; Semple, J. C. 2008. Cytogeography of Solidago subsect. Glomeruliflorae (Asteraceae: Astereae). Botany 86: 1488-1496.
• Cox, P. B. 1994. A taxonomic revision of Rudbeckia subg. Macrocline (Asteraceae: Heliantheae: Rudbeckiinae). Castanea 59: 300-318.
• Crawford, D. J.; Mort, M. E. 2005. Phylogeny of eastern North American Coreopsis (Asteraceae-Coreopsideae): insights from nuclear and plastid sequences, and comments on character evolution. Amer. J. Bot. 92: 330-336.
• Crawford, E. R.; Young, D. R. 1998. Spatial/temporal variations in shrub thicket soil seed banks on an Atlantic coast barrier island. Amer. J. Bot. 85: 1739-1744.
• Cronquist, A. 1955. Phylogeny and taxonomy of the Compositae. Amer. Midl. Naturalist 53: 478-511.
• Cronquist, A. 1947. A revision of the North American species of Erigeron north of Mexico. Brittonia 6: 121-302.
• Cusick, A. W. 1986. Distributional and taxanomic notes on the vascular flora of West Virginia. Castanea 51: 56-65.
• Czapik, R. 1996. Problems of apomictic reproduction in the families Compositae and Rosaceae. Folia Geobot. Phytotax. 31: 381-7.
• Dalby, R. 2001. Three bee plants: purple loosestrife, vetch, and safflower. Amer. Bee J. 141: 53-55.
• Dauer, J. T. et.al. 2007. Temporal and spatial dynamics of long-distance Conyza canadensis seed dispersal. J. Applied Ecol. 44: 105-114.
• Desrochers, A. M. et.al. 1988. A biosystmeatic study of Carduus nutans in Canada. Canad. J. Bot. 66: 1621-1631.
• Desrochers, A. M. et.al. 1988. The biology of Canadian weeds. 89. Carduus nutans L. and Carduus acanthoides L. Canad. J. Pl. Sci. 68: 1053-1068.
• DiTommaso, A. 2004. Germination behavior of common ragweed (Ambrosia artemisiifolia) populations across a range of salinities. Weed Science 52: 1002-1009.
• Doll, R. 1974. The genus Taraxacum. Wittenberg-Lutherstadt. (In German)
• Dress, W. J. 1966. Notes on the cultivated Compositae 9. Ornopodum. Baileya 14: 74-86.
• Duistermaat, H. 1996. Monograph of Arctium L. (Asteraceae). Gorteria suppl. 3: 1-143.
• Duistermaat, H. 2003. Typification of Arctium lappa L. (Asteraceae). Taxon 52: 851-852.
• Eames, E. H. 1916. Some varieties and forms of Connecticut plants. Rhodora 18: 239-240.
• Eaton, R. J. 1972. Chrysopsis mariana in New England. Rhodora 74: 152-3.
• Edwards, P. J. et.al. 2006. Genetic variation in native and invasive populations of Erigeron annuus as assessed by RAPD markers. Int. J. Plant Sci. 167: 93-101. (1)
• Egler, F. E. 1990. High-temperature effects on germination and survival of weed seeds in soil. Weed Science 38: 429-435.
• Ehrendorfer, F.; Guo, Y. P. 2006. Multidisciplinary studies on Achillea sensu lato (Compositae-Anthemideae): new data on systematics and phylogeography. Willdenowia 36: 69-87.
• Eldenas, P. et.al. 1998. Molecular phylogenetics of the tribe Inuleae s. str. (Asteraceae), based on ITS sequences of nuclear ribosomal DNA. Pl. Syst. Evol. 210: 159-173.
• Enke, N.; Gemeinholzer, B. 2008. Babcock revisited: new insights into generic delimitation and character evolution in Crepis L. (Compositae: Cichorieae) from ITS and matK sequence data Taxon 57: 756-768.
• Erbar, C.; Enghofer, J. 2002. Investigations on the reproductive system of chicory (Cichorium intybus, Asteraceae): pollen positioning, pollen load on the stigma, pollen tube competition. Bot. Jahrb. Syst. 123: 179-208. (In German; English abstract)
• Estes, D. 2004. Noteworthy collections: Middle Tennessee. Castanea 69: 69-74.
• Fernald, M. L. 1908. Notes on some plants of northeastern America. Rhodora 10: 84-95.
• Fernald, M. L. 1911. A botanical expedition to Newfoundland and southern Labrador. Rhodora 13: 109-62.
• Fernald, M. L. 1939. New species, varieties and transfers. Rhodora 41: 423-61.
• Fisher, R. F.; Woods, R. A.; Glavicic, M. R. 1978. Allelopathic affects of goldenrod and aster on young sugar maple. Canad. J. Forest Res. 8: 1-9.
• Fisher, T. R. 1957. Taxonomy of the genus Heliopsis (Compositae). Ohio J. Science 57: 171-191.
• Fleming, P.; Kanal, R. 1992. Newly documented species of vascular plants in the District of Columbia. Castanea 57: 132-46.
• Flora of North America Editorial Committee. 2006. Flora of North America. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. , 616 pages. (ISBN 0195305654)
• Flora of North America Editorial Committee. 2006. Flora of North America. Vol. 20. Magnoliophyta: Asteridae, part 8: Asteraceae, part 2. Oxford Univ. Press, New York. , 666 pages. (ISBN 0195305647)
• Flora of North America Editorial Committee. 2006. Flora of North America. Vol. 19. Magnoliophyta: Asteridae, part 8: Asteraceae, part 1. Oxford Univ. Press, New York. , 579 pages. (ISBN 0195305639)
• Fogg, J. M. Jr. 1966. The silent travelers. Brooklyn Bot. Gard. Rec. 22: 4-7. (New Series)
• Foote, K. 2002. Black-eyed susan (Rudbeckia hirta L.). New York Flora Association Newsletter 13: 1-6.
• Frankowski, B. et.al. 1977. Increase in abundance of Solidago sempervirens on a diked salt marsh in southwestern Connecticut. Bull. Torrey Bot. Club 104: 383-385.
• Friedland, A. J.; Smith, A. P. 1982. Effects of vines on successional herbs. Amer. Midl. Naturalist 108: 402-3.
• Funk, V. A. et.al. (eds.) (2009): 2009. Systematics, evolution, and biogeography of Compositae. IAPT: Vienna.
• Gaiser, L. O. 1946. The genus Liatris. Rhodora 48: 165-183, 216-263, 273-326, 331-382, 393-412.
• Gandhi, K. N. 1999. Nomenclatural novelties for the Western Hemisphere plants - II. Harvard Papers in Botany 4: 295-299.
• Gandhi, K. N.; Young, S. M.; Somers, P. 2003. A reassessment of the taxonomy and nomenclature of Liatris borealis Nutt. Ex J. McNab and Lacinaria scariosa var. novae-angliae Lunell (Asteraceae). Taxon 52: 313-317.
• Garcia-Jacas, N. et.al. 2002. Tribal and subtribal delimitation and phylogeny of the Cardueae (Asteraceae): A combined nuclear and chloroplast DNA analysis. Molec. Phylogenet. Evol. 22: 51-64.
• Gaskin, J. F.; Wilson, L. M. 2007. Phylogenetic relationships among native and naturalized Hieracium (Asteraceae) in Canada and the United States based on plastid DNA sequences. Syst. Bot. 32: 478-485.
• Geleta, M. et.al. 2010. Phylogenetics and taxonomic delimitation of the genus Guizotia (Asteraceae) based on sequences derived from various chloroplast DNA regions. Pl. Syst. Evol. 289: 77-89.
• Gemeinholzer, B.; Bachmann, K. 2005. Examining morphological and molecular diagnostic character states of Cichorium intybus L. (Asteraceae) and C. spinosum L. Pl. Syst. Evol. 253: 105-123.
• Gibson, J. P. 2002. Genetic diversity and mating system comparisons between ray and disc achene seed pools of the heterocarpic species Heterotheca subaxillaris (Asteraceae). Int. J. Plant Sci. 163: 1025-1034.
• Ginsberg, H. S. 1983. Foraging ecology of bees in an old field. Ecology 64: 165-175.
• Goodwin, R. H. 1945. Estimates of the minimum numbers of genes differentiating several taxonomic categories in the genus Solidago. Bull. Torrey Bot. Club 72: 235-246.
• Gowe, A. K.; Brewer, J. S. 2005. The evolution of fire-dependent flowering in goldenasters (Pityopsis spp.). J. Torrey Bot. Soc. 132: 384-400.
• Grant, W. F. 1953. A cytotaxonomic study of the genus Eupatorium. Amer. J. Bot. 40: 729-742.
• Gravuer, K. et.al. 2003. Dispersal biology of Liatris scariosa var. novae-angliae (Asteraceae), a rare New England grassland perennial. Amer. J. Bot. 90: 1159-1167.
• Gross, K. L. 1984. Effects of seed size and growth form on seedling establishment of 6 monocarpic perennial plants. J. Ecol. 72: 369-388.
• Guo, Y. P. et.al. 2004. Phylogeny and systematics of Achillea (Asteraceae-Anthemideae) inferred from nrITS and plastid trnL-F DNA sequences. Taxon 53: 657-672.
• Guo, Y. P. et.al. 2008. AFLP trees versus scatterplots: evolution and phylogeography of the polyploid complex Achillea millifolium agg. (Asteraceae). Taxon 57: 153-169.
• Hacker, S. D.; Bertness, M. D. 1995. Morphological and physiological consequences of a positive plant interaction. Ecology 76: 2165-75.
• Hagerup, O. 1944. Notes on some boreal polyploides. Hereditas 30: 152-60.
• Hall, G. W. 1967. A biosystematic study of the North American complex of the genus Bidens (Compositae). Ph.D. Dissertation Indiana Univ., Bloomington, IN,
• Halverson, K. et.al. 2008. Origins, distribution, and local co-occurrence of polyploid cytotypes in Solidago altissima (Asteraceae). Amer. J. Bot. 95: 50-58.
• Hancock, J. F. 1977. The relationship of genetic polymorphism and ecological amplitude in successional species of Erigeron. Bull. Torrey Bot. Club 104: 279-281. (E. annuus & E. canadensis)
• Hancock, J. F.; Wilson, R. E. 1976. Biotype selection in Erigeron annuus during old field succession. Bull. Torrey Bot. Club 103: 122-125.
• Hanks, J. P.; Lewis, A. J. 1971. Ambrosia bidentata: a new ragweed in the Torrey range. Bull. Torrey Bot. Club 98: 109.
• Hardin, E. D.; Wistendahl, W. A. 1983. The effects of floodplain trees on herbaceous vegetation patterns, micro topography, and litter. Bull. Torrey Bot. Club 110: 23-30.
• Harkess, R. L.; Lyons, R. E. 1994. Floral initiation in Rudbeckia hirta (Asteraceae) under limited inductive photoperiodic treatments. Amer. J. Bot. 81: 1021-1026.
• Harms, V. L. 1965. Biosystematic studies in the Heterotheca subaxillaris complex (Compositae-Astereae). Trans. Kansas Acad. Sci. 68: 122-124.
• He, W. M. et.al. 2010. Is there a risk to living large? Large size correlates with reduced growth when stressed for knapweed populations. Biological Invasions 12: 3591-3598.
• Heering, W. 1899. Uber die Assimilationsorgane der Gattung baccharis. Bot. Jahrb. Syst. 27: 446-84. (In German)
• Heinken, T. 2000. Dispersal of plants by a dog in a deciduous forest. Bot. Jahrb. Syst. 122: 449-467.
• Heinrich, B. 1979. Majoring and minoring by foraging bumble bees Bombus vagans, an experimental analysis. Ecology 60: 245-255.
• Hellwig, F. 1989. (953) Proposal to conserve 8933 Baccharis L. (Asteraceae) with a conserved type. Taxon 38: 513-5.
• Hickler, M. G. 1999. Notes on the habits and life-history of Bidens discoidea: an epiphyte in Massachusetts floodplain ponds. Rhodora 101: 298-299.
• Hind, D. J. N.; Beentje, H. J. (eds.) (1996): 1996. Compositae: Proceedings of the International Composite Conference, Kew, 1994. Kew Royal Botanical Gardens, Kew. , 688 pages.
• Hind, D. J. N.; Jeffrey, C.; Pope, G. V. (eds.) (1995): 1995. Advances in Compositae systematics. Royal Botanical Gardens, Kew, Richmond, Surrey, UK. , 469 pages. (For review by D.J. Pinkava see J. Econ. Bot. 50(3):350. 1996.)
• Hodgdon, A. R. 1944. Mikania scandens in southern New Hampshire. Rhodora 46: 142-144.
• Holmes, W. C. 1981. Mikania (Compositae) of the United States. Sida 9: 147-158.
• Holubowicz, R. et.al. 1992. Internal seed structure of selected vegetable species. Acta Botanica Hungarica 37: 267-277.
• Hood, J. L. A.; Semple, J. C. 2003. Pappus variation in Solidago (Asteraceae: Astereae). Sida 20: 1617-1630.
• Horsburgh, M. et.al. 2011. Relative pollinator effectiveness of insect floral visitors to two sympatric species of wild aster: Symphyotrichum lanceolatum (Willd.) Nesom and S. lateriflorum (L.) Love & Love (Asteraceae: Astereae). Rhodora 113: 64-86.
• House, H. D. 1921. Nomenclatural notes on certain American plants. I. Amer. Midl. Naturalist 7: 126-35.
• Hughes, J.; Richards, A. J. 1988. The genetic structure of populations of sexual and asexual Taraxacum (dandelions). Heredity 60: 161-171.
• Hull-Sanders, H. M. et.al. 2009. Effects of poly[ploidy on secondary chemistry, physiology, and performance of native and invasive genotypes of Solidago gigantea (Asteraceae). Amer. J. Bot. 96: 762-770.
• Hurlbert, S. H. 1970. Flowering number, flowering time, and reproductive isolation among ten species of Solidago (Compositae). Bull. Torrey Bot. Club 97: 189-195.
• Hussey, J. S. 1974. Some useful plants of early New England. Econ. Bot. 28(3): 311-37.
• Jackson, J. D. 1972. The evolution of functional dioecism in the genus Baccharis (Compositae). Brittonia 24(2): 121. (Abstract)
• Jackson, R. C. 1960. A revision of the genus Iva. Univ. Kansas Sci. Bull. 41: 793-896.
• Jones, S. B. 1968. Chromosome numbers in southeastern United States Compositae, I. Bull. Torrey Bot. Club 95: 393-395.
• Jones, S. B. 1968. Chromosome numbers in southeastern United States Compositae, II. Bull. Torrey Bot. Club 95: 488-489.
• Jones, S. B. 1966. Compositae chromosome numbers. Bull. Torrey Bot. Club 93: 278-279.
• Jones, S. B. 1970. The taxonomy of Vernonia acaulis, V. glauca and V. noveboracensis. Rhodora 72: 145-163.
• Jongejans, E. et.al. 2007. Establishment and spread of founding populations of an invasive thistle: the role of competition and seed limitation. Biological Invasions 9: 317-325. (Carduus acanthoides)
• Kapoor, B. M. et.al. 1987. Annotated list of the chromosome numbers of the vascular flora of northeastern America V. Naturaliste Canad. 114: 105-116.
• Karis, P. O. 1995. Cladistics of the subtribe Ambrosiinae (Asteraceae: Heliantheae). Syst. Bot. 20: 40-54.
• Kaspar, M. J.; McWilliams, E. L. 1982. Effects of temperature on the germination of selected wild flower seeds. Hortscience 17: 595-596.
• Keane, B. et.al. 2005. Pollution and genetic structure of North American populations of the common dandelion (Taraxacum officinale). Environmental Monitoring and Assessment 105: 341-357.
• Keddy, P. A.; Constabel, P. 1986. Germination of ten shoreline plants in relation to seed size, soil particle size and water level: an experimental study.
• Kephart, S. R. 1987. Phenological variation in flowering and fruiting of Asclepias. Amer. Midl. Naturalist 118: 64-76.
• Kim, K. J.; Jansen, R. K. 1994. Comparisons of phylogenetic hypotheses among different data sets in dwarf dandelions (Krigia, Asteraceae): Additional information from internal transcribed spacer sequences of nuclear ribosomal DNA. Pl. Syst. Evol. 190: 157-185.
• Kim, K. J.; Turner, B. L. 1992. Systematic overview of Krigia (Asteraceae-Lactuceae). Brittonia 44: 173-198.
• Kim, S. C. et.al. 1999. ITS sequences and phylogenetic relationships in Bidens and Coreopsis (Asteraceae). Syst. Bot. 24: 480-493.
• King, L. M. 1993. Origins of genotypic variation in North American dandelions inferred from ribosomal DNA and chloroplast DNA restriction enzyme analysis. Evolution 47: 136-151.
• King, R. M.; Robinson, H. 1970. Eupatorium, a composite genus of Arcto-Tertiary distribution. Taxon 19: 769-774.
• King, R. M.; Robinson, H. 1987. The genera of the Eupatorieae (Asteraceae). Missouri Botanic Garden/Allen Press, Lawrence, KS. , 581 pages.
• Kingsbury, J. M. 1966. Poison ivy, poison sumac and other rash-producing plants. Cornell Extension Bulletin 1154: 1-16.
• Kirschner, J. 2011. Typification of Leontodon taraxacum L. (= Taraxacum officinale F. H. Wiff.) and the generic name Taraxacum: a review and a new typification proposal. Taxon 60: 216-220.
• Kirschner, J. et.al. 2003. Principal features of the cpDNA evolution in Taraxacum (Asteraceae, Lactuceae): a conflict with taxonomy. Pl. Syst. Evol. 239: 231-255.
• Kitamura, S. 1978. Dendranthema and Nipponanthemum nipponicum- new genus, new combination. Acta Phytotax. Geobot. 29: 165-170.
• Klemow, K. M.; Raynal, D. J. 1985. Demography of two facultative biennial plant species in an unproductive habitat.
• Knapp, A. K.; Carter, G. A. 1998. Variability in leaf optical properties among 26 species from a broad range of habitats. Amer. J. Bot. 85: 940-946.
• Knochel, D. G. et.al. 2010. Effects of plant competition, seed predation, and nutrient limitation on seedling survivorship of spotted knapweed (Centaurea stoebe). Biological Invasions 12: 3771-3784.
• Korneck, D. 2004. Centaurea stoebe subsp. micranthos, kleinkopfige Flockenblume, eine verkannte Sippe unserer Flora (vorlaufige Mitteilung).. Hess. Florist. Briefe 53: 1-5. (In German)
• Krischik, V. A.; Denno, R. F. 1990. Differences in environmental response between the sexes of the dioecious shrub, Baccharis halimifolia (Compositae). Oecologia 83: 176-81.
• Krischik, V. A.; Denno, R. F. 1990. Patterns of growth, reproduction, defense and herbivory in the dioecious shrub, Baccharis halimifolia (Compositae). Oecologia 83: 182-90.
• Kucera, C. L. 1958. Flowering variation in geographic selections of Eupatorium rugosum Houtt. Bull. Torrey Bot. Club 85: 40-48.
• Lamont, E. E. 1994. Rediscovery of Solidago sempervirens var. mexicana (Asteraceae) in New York, with notes on its taxonomic history. Bull. Torrey Bot. Club 121: 292-4.
• Lamont, E. E. 1992. Guide to the goldenrods of Long Island, New York. Long Island Botanical Society Newsletter 2: 1-7.
• Lamont, E. E. 1995. Taxonomy of Eupatorium section Verticillata (Asteraceae). Mem. New York Bot. Gard. 76: 1-68.
• Lamont, E. E. 2008. Status of Solidago erecta (Asteraceae) in New York. J. Torrey Bot. Soc. 135: 595-599.
• Lamont, E. E.; Fitzgerald, J. M. 2001. Noteworthy plants reported from the Torrey Range- 2000. J. Torrey Bot. Soc. 128: 409-414.
• Lane, M. A. 1979. Taxonomy of the genus Amphiachyris (Asteraceae: Astereae). Syst. Bot. 4: 178-189.
• Lawrey, J. D. 1977. Trace metal accumulation by plant species from a coal strip-mining area in Ohio. Bull. Torrey Bot. Club 104: 368-375.
• Lebeda, A. et.al. 2004. Geographical distribution of wild Lactuca species (Asteraceae, Lactuceae). Bot. Rev. 70: 328-356.
• Leck, M. A. 1996. Germination of macrophytes from a Delaware River tidal freshwater wetland. Bull. Torrey Bot. Club 123: 48-67.
• Leck, M. A.; Baskin, C. C.; Baskin, J. M. 1994. Germination ecology of Bidens laevis (Asteraceae) from a tidal freshwater wetland. Bull. Torrey Bot. Club 121: 230-9.
• Leck, M. A.; Simpson, R. L. 1993. Seeds and seedlings of the Hamilton marshes, a Delaware river tidal freshwater wetland. Proc. Acad. Nat. Sci. Philadelphia 144: 267-81.
• Lee, J. et.al. 2003. Phylogenetic relationships among the primarily North American genera of Cichorieae (Compositae) based on analysis of 18S-26S nuclear rDNA ITS and ETS sequences. Syst. Bot. 28: 616-626.
• Lee, P. C. 1995. The effect of gap dynamics on the size and spatial structure of Solidago sempervirens on primary coastal dunes. J. Veg. Sci. 6: 837-846.
• Lehr, J. H. 1963. A Solidago hybrid. Bull. Torrey Bot. Club 90: 355-356.
• Leins, P.; Erbar, C. 2000. The earliest developmental stages in the flowers of the Asteraceae. Bot. Jahrb. Syst. 122: 503-515. (In German; English abstract)
• Leonard, M. R.; Cook, R. E.; Semple, J. C. 2005. A multivariate morphometric study of the aster genus Sericocarpus (Asteraceae: Astereae). Sida 21: 1471-1505.
• Loomis, E. S.; Fishman, L. 2009. A contient-wide clone: population genetic variation of the invasive plant Hieracium aurantiacum (orange hawkweed; Asteraceae) in North America. Int. J. Plant Sci. 170: 759-765.
• Lusk, J. M.; Reekie, E. G. 2007. The effect of growing season length and water level fluctuations on growth and survival of two rare and at risk Atlantic Coastal Plain flora species, Coreopsis rosea and Hydrocotyle umbellata. Canad. J. Bot. 85: 119-131.
• MacDonald, A. A. M.; Kotanen, P. M. 2010. Leaf damage has weak effects on growth and fecundity of common ragweed (Amrosia artemisiifolia). Botany 88: 158-164.
• Macior, L. W. 1968. Pollination adaptation in Pedicularis canadensis. Amer. J. Bot. 55: 1031-1035. (other genera as well)
• Mack, R. N. 2003. Plant naturalizations and invasions in the eastern United States: 1634-1860. Ann. Missouri Bot. Gard. 90: 77-90.
• Mackenzie, K. K. 1920. Scientific names applicable to our purple-flowered eupatoriums. Rhodora 22: 157-165.
• Magnarelli, L. A. 1983. Nectar sugars and caloric reserves in natural populuations of Aedes canadensis and Aedes stimulans Diptera Culicidae. Environmental Entomology 12: 1482-1486.
• Marlowe, K.; Hufford, L. 2007. Taxonomy and biogeography of Gaillardia (Asteraceae): a phylogenetic analysis. Syst. Bot. 32: 208-226.
• Martin, M. D. et.al. 2009. Pollen clumping and wind dispersal in an invasive angiosperm. Amer. J. Bot. 96: 1703-1711.
• Martonfiova, L. 2006. Possible pathways of the gene flow in Taraxacum sect. Ruderalia. Folia Geobotanica 41: 183-201.
• Mavrodiev, E. V. et.al. 2005. Phylogeny of Tragopogon L. (Asteraceae) based on internal and external transcribed spacer sequence data. Int. J. Plant Sci. 166: 117-133.
• Mavrodiev, E. V. et.al. 2004. Phylogenetic relationships in subtribe Scorzonerinae (Asteraceae: Cichorioideae: Cichorieae) based on ITS sequence data. Taxon 53: 699-712.
• Mavrodiev, E. V. et.al. 2007. Polyphyly of Tragopogon porrifolius L. (Asteraceae), a European native with intercontinental disjuncts. Int. J. Plant Sci. 168: 889-904.
• McArthur, E. D. et.al. 1998. Taxonomy of Sphaeromeria, Artemisia, and Tanacetum (Compositae, Anthemideae) based on randomly amplified polymorphic DNA (RAPD). Great Basin Naturalist 58: 1-11.
• McMullen, J. M. 2002. Bitterweed (Picris hieracioides L.)- an abundant but often overlooked species. New York Flora Association Newsletter 13: 6-7.
• Mechanda, S. M. et.al. 2004. Analysis of diversity of natural populations and commercial lines of Echinaceae using AFLP. Canad. J. Bot. 82: 461-484.
• Mehrhoff, L. J. 1983. Sclerolepis uniflora (Compositae) in New England. Rhodora 85: 433-438.
• Merriman, M. L. 1921. The receptacle of Achillea millifolium L. Torreya 21: 21-24.
• Miao, B.; Turner, B.; Mabry, T. 1995. Molecular phylogeny of Iva (Asteraceae, Heliantheae) based on chloroplast DNA restriction site variation. Pl. Syst. Evol. 195: 1-12.
• Michaels, H. J. et.al. 1993. Interfamilial relationships of the Asteraceae: insights from rbcL sequence variation. Ann. Missouri Bot. Gard. 80: 742-751.
• Milberg, P.; Andersson, L. 1997. Seasonal variation in dormancy and light sensitivity in buried seeds of eight annual weed species. Canad. J. Bot. 75: 1998-2004.
• Milstead, W. L. 1964. A revision of the North American species of Prenanthes. Ph.D. Dissertation Purdue Univ., West Lafayette, IN,
• Mitich, L. W. 2000. Oxeye daisy (Chrysanthemum leucanthemum L.), the white-flowered gold flower. Weed Technol. 14: 659-662.
• Mogie, M.; Ford, H. 1988. Sexual and asexual Taraxacum species. Biol. J. Linn. Soc. 35: 155-168.
• Monachino, J. 1955. A yellow flowered silver-rod. Bull. Torrey Bot. Club 83: 62-63.
• Moon, M. et.al. 1993. Acclimatization to flooding of the herbaceous vine, Mikania scandens. Funct. Ecol. 7: 610-615.
• Morgan, J. T. 1966. A taxonomic study of the genus Boltonia (Asteraceae). Ph.D. Dissertation Univ. North Carolina, Chapel Hill, NC,
• Mort, M. E. et.al. 2008. Phylogeny of Coreopsideae (Asteraceae) inferred from nuclear and plastid DNA sequences. Taxon 57: 109-120.
• Moyle, J. B. 1945. Some chemical factors influencing the distribution of aquatic plants in Minnesota. Amer. Midl. Naturalist 34: 402-420.
• Mraz, P. et.al. 2011. Polyploidy in phenotypic space and invasion context: a morphological study of Centaurea stoebe s.l. Int. J. Plant Sci. 172: 386-402.
• Mukherjee, S. K. 2001. Cypselar features in nineteen taxa of the tribe Senecioneae (Asteraceae) and their taxonomic significance. J. Econ. Taxon. Bot. 19: 253-274.
• Mummey, D. L.; Rillig, M. C. 2006. The invasive plant species Centaurea maculosa alters arbuscular mycorrhizal fungal communities in the field. Pl. & Soil 288: 81-90.
• Myers, J. A. et.al. 2004. Seed dispersal by white-tailed deer: implications for long-distance dispersal, invasion, and migration of plants in eastern North America. Oecologia 139: 35-44.
• Nandula, V. K. et.al. 2006. Factors affecting germination of horseweed (Conyza canadensis). Weed Science 54: 898-902.
• Neff, K. P.; Baldwin, A. H. 2005. Seed dispersal into wetlands: Techniques and results for a restored tidal freshwater marsh. Wetlands 25: 392-404.
• Nelson, J. B. 1993. Noteworthy Collections, South Carolina. Castanea 58: 59-63.
• Nesom, G. L. 1990. Infrageneric taxonomy of North and Central American Baccharis (Asteraceae:Astereae). Phytologia 69(1): 40-6.
• Nesom, G. L. 1999. Review of early nomenclature in Euthamia (Asteraceae: Astereae). Sida 18: 1009-1018.
• Nesom, G. L. 2004. Notes on typification in Pluchea (Asteraceae: Plucheae). Sida 21: 59-64.
• Nesom, G. L. 2006. Taxonomic review of Symphyotrichum patens (Asteraceae: Astereae). Sida 22: 1075-1080.
• Nesom, G. L. 1989. Infrageneric taxonomy of New World Erigeron (Compositae: Astereae). Phytologia 67: 67-93.
• Nesom, G. L. 2004. Taxonomic reevaluations in North American Erigeron (Asteraceae: Astereae). Sida 21: 19-40.
• Nesom, G. L. 1990. Further definition of Conyza (Asteraceae: Astereae). Phytologia 68: 229-233.
• Nesom, G. L. 1993. Taxonomy of Doellingeria (Asteraceae: Astereae). Phytologia 75: 452-462.
• Nesom, G. L. 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68: 186-198.
• Nesom, G. L. 1992. A new species of Ionactis (Asteraceae: Astereae) and an overview of the genus. Brittonia 44: 247-252.
• Nesom, G. L. 2001. Taxonomic review of Chrysogonum (Asteraceae: Heliantheae). Sida 19: 811-820.
• Nesom, G. L. 2005. Infrageneric classification of Liatris (Asteraceae: Eupatorieae). Sida 21: 1305-1321.
• Nesom, G. L.; Noyes, R. D. 1999. Notes on sectional delimitations in Erigeron (Asteraceae: Astereae). Sida 18: 1161-1165.
• Nesom, G. L.; Stucky, J. M. 2004. Taxonomy of the Liatris pilosa (graminifolia) group (Asteraceae: Eupatorieae). Sida 21: 815-826.
• Nilsen, E. T. et.al. 1999. Inhibition of seedling survival under Rhododendron maximum (Ericaceae): could allelopathy be a cause? Amer. J. Bot. 86: 1597-1605.
• Noyes, R. D. 2006. Apomixis via recombination of genome regions for apomeiosis (diplospory) and parthenogenesis in Erigeron (daisy fleabane, Asteraceae). Sexual Pl. Reprod. 19: 7-18.
• Noyes, R. D. 2000. Biogeographical and evolutionary insights on Erigeron and allies (Asteraceae) from ITS sequence data. Pl. Syst. Evol. 220: 93-114.
• Noyes, R. D.; Allison, J. R. 2005. Cytology, ovule development, and pollen quality in sexual Erigeron strigosus (Asteraceae). Int. J. Plant Sci. 166: 49-59.
• Noyes, R. D.; Riesenberg, L. H. 1999. ITS sequence data support a single origin for North American Astereae (Asteraceae) and reflect deep geographic divisions in Aster s.l. Amer. J. Bot. 86: 398-412.
• Nussbaum, E. S. et.al. 1985. The effects of temperature and rainfall on emergence and growth of eight weeds. Weed Science 33: 165-170.
• Nuzzo, V. A.; McClain, W.; Strole, T. 1996. Fire impact on groundlayer flora in a sand forest. Amer. Midl. Naturalist 136: 207-21.
• Oberprieler, C. 2001. Phylogenetic relationships in Anthemis L. (Compositae: Anthemideae) based on nrDNA ITS sequence variation. Taxon 50: 745-762.
• Ochsmann, J. 2000. Morphologische und molekularsystematische Untersuchungen an der Centaurea stoebe L.-Gruppe (Asteraceae-Cardueae) in Europa. Diss. Bot. 324: 1-242. (In German)
• Ochsmann, J. 2001. On the taxonomy of spotted knapweed (Centaurea stoebe L.). In: Smith, L. (ed.): Proceedings of the First International Knapweed Symposium of the Twenty-First Century.
• Ogden, J. 1974. The reproductive strategy of Tussilago farfara L.. J. Ecol. 62: 291-324.
• Oldham, M. J.; Klymko, J. 2011. Fetid dogweed (Dyssodia papposa; Asteraceae) in Canada. Northeastern Naturalist 18: 347-356.
• Olsen, K. M. 1997. Pollination effectiveness and pollinator importance in a population of Heterotheca subaxillaris (Asteraceae). Oecologia 109: 114-121.
• Oosting, H. J. 1945. Tolerance to salt spray of plants of coastal dunes. Ecology 26(1): 85-9.
• Orava, C.; Drake, D. R. 1997. Effects of salinity on germination and growth of Solidago sempervirens var. mexicana (L.) Fern. Castanea 62: 272-277.
• Ortiz, M. A. et.al. 2006. Self-incompatibility and floral parameters in Hypochaeris sect. Hypochaeris (Asteraceae). Amer. J. Bot. 93: 234-244.
• Pak, J. H. 1995. Phylogeny and reclassification of the genus Lapsana (Asteraceae: Lactuceae). Taxon 44: 13-21.
• Panero, J. L. et.al. 1999. Phylogenetic relationships of subtribe Ecliptinae (Asteraceae: Heliantheae) based on chloroplast DNA restriction site data. Amer. J. Bot. 86: 413-427.
• Panero, J. L.; Jansen, R. K. 1997. Chloroplast DNA restriction site study of Verbesina (Asteraceae: Heliantheae). Amer. J. Bot. 84: 382-392.
• Paquin, V.; Aarssen, L. W. 2004. Allometric gender allocation in Ambrosia artemisiifolia (Asteraceae) has adaptive plasticity. Amer. J. Bot. 91: 430-438.
• Paratley, R. D. 1986. Vegetation-environment relations in a conifer swamp in central New York. J. Torrey Bot. Soc. 113: 357-371.
• Payne, W. W. 1964. A re-evaluation of the genus Ambrosia (Compositae). J. Arnold Arbor 45: 401-430.
• Pellicer, J. et.al. 2011. Phylogenetic relationships of Artemisia subg. Dracunculus (Asteraceae) based on ribosomal and chloroplast DNA sequences. Taxon 60: 691-704.
• Pemberton, R. W.; Irving, D. W. 1990. Elaiosomes on weed seeds and the potential for myrmecochory in naturalized plants.
• Perdue, R. E. 1957. Synopsis of Rudbeckia subgenus Rudbeckia. Rhodora 59: 293-299.
• Peterson-Smith, J.; Shea, K. 2010. Seedling emergence and early survivial of Carduus spp. in three habitats with press and pulse disturbance. J. Torrey Bot. Soc. 137: 287-296.
• Pike, R. B. 1970. Evidence for the hybrid status of Aster xblakei (Porter) House. Rhodora 72: 401-436.
• Pires, J. C. et.al. 2004. Molecular cytogenetic analysis of recently evolved Tragopogon (Asteraceae) allopolyploids reveal a karyotype that is additive of the diploid progenitors. Amer. J. Bot. 91: 1022-1035.
• Pisula, N. L.; Meiners, S. J. 2010. Allelopathic effects of goldenrod species on turnover in successional communities. Amer. Midl. Naturalist 163: 161-172.
• Pitcher, D. 1989. Element stewardship abstract for Xanthium strumarium - rough cockle-bur.
• Pollard, C. L. 1899. The genus Achillea in North America. Bull. Torrey Bot. Club 26: 365-372.
• Rand, T. A. 2000. Seed dispersal, habitat suitability and the distribution of halophytes across a salt marsh tidal gradient. J. Ecol. 88: 608-621.
• Rauschert, S. 1974. Nomenclatural problems in the genus Matricaria L. Folia Geobot. Phytotax. 9: 249-260. (In German)
• Reifner, R. E.; Hill, S. R. 1983. Notes on infrequent and threatened plants of Maryland including new state records. Castanea 48: 117-37.
• Richards, C. L. et.al. 2005. Habitat range and phenotypic variation in salt marsh plants. Plant Ecology 176: 263-273.
• Richards, E. L. 1968. A monograph of the genus Ratibida. Rhodora 70: 348-393.
• Richardson, M. L.; Hanks, L. M. 2011. Differences in spatial distribution, morphology, and communities of herbivorous insects among three cytotypes of Solidago altissima (Asteraceae). Amer. J. Bot. 98: 1595-1601.
• Roberts, M. L. 1985. The cytology, bioloy, and systematics of Megalodonata beckii (Compositae). Aquatic Botany 21: 99-110.
• Roberts, M. L. 1985. The cytology biology and systematics of Megalodonta beckii Compositae. Aquatic Botany 21: 99-110.
• Robertson, C. 1894. Flowers and insects: Rosaceae and Compositae. Trans. St. Louis Acad. Sci. 6: 435-80.
• Robinson, B. L. 1934. Mikania scandens and its near relatives. Contr. Gray Herb. 104: 55-71.
• Robinson, H. 2004. New supertribes, Helianthodae and Senecionodae, for the subfamily Asteroideae (Asteraceae). Phytologia 86: 116-120.
• Robinson, H. 1974. Studies in the Senecioneae (Asteraceae). VI. The genus Arnoglossum. Phytologia 28: 294-295.
• Robinson, H. 1978. Studies in the Heliantheae (Asteraceae). XII. Re-establishment of the genus Smallanthus. Phytologia 39: 47-53.
• Robson, D. B. 2010. A comparison of flower-visiting insects to rare Symphyotrichum sericeum and common Solidago nemoralis (Asteraceae). Botany 88: 241-248.
• Rossbach, G. B. 1963. Additional phytogeographical notes on plants collected in West Virginia. Castanea 28: 165-169. (Passing reference to Heterotheca subaxillaris in NJ & NY)
• Rossbach, G. B. 1936. Northeastward extensions in the Maine flora. Rhodora 38: 453-4.
• Ruggiero, D. C.; Shea, K. 2011. effects of interspecific competition on early life history of the invasive thistles Carduus nutans and C. acanthoides. Northeastern Naturalist 18: 197-206.
• Samuel, R. et.al. 2003. Phylogenetic relationships among species of Hypochaeris (Asteraceae, Cichorieae) based on ITS, plastis TRNL intron, TRNL-F spacer, and MATK sequences. Amer. J. Bot. 90: 496-507.
• Samuel, R. et.al. 2006. Molecular phylogenetics reveals Leontodon (Asteraceae, Lactuceae) to be diphyletic. Amer. J. Bot. 93: 1193-1205.
• Sanchez-Jimenez, I. et.al. 2010. Molecular systematics of Echinops L. (Asteraceae, Cynareae): a phylogeny based on ITS and trnL-trnF sequences with emphasis on sectional delimitation. Taxon 59: 698-708.
• Sanz, M. et.al. 2008. Molecular phylogeny and evolution of floral characters of Artemisia and allies (Anthemidaea, Asteraceae); evidence from nrDNA ETS and ITS sequences. Taxon 57: 66-78.
• Sather, N. 1987. Element stewardship abstract for Cirsium arvense - Canada thistle.
• Schilling, E. E. 2011. Systematics of the Eupatorium album complex (Asteraceae) from eastern North America. Syst. Bot. 36: 1088-1100.
• Schilling, E. E.; Panero, J. L.; Cox, P. B. 1999. Chloroplast DNA restriction site data support a narrowed interpretation of Eupatorium (Asteraceae). Pl. Syst. Evol. 219: 209-223.
• Schmidt, G. J. 1998. Phylogenetic reconstruction in Eupatorium (Asteraceae: Eupatorieae) using ITS DNA sequences. M.S. Thesis Univ. Tennessee, Knoxville, TN,
• Schmidt, G. J.; Schilling, E. E. 2000. Phylogeny and biogeography of Eupatorium (Asteraceae: Eupatorieae) based on nuclear ITS sequence data. Amer. J. Bot. 87: 716-726.
• Sell, P. D. 1981. Lapsana intermedia or Lapsana communis ssp. intermedia. Watsonia 13: 299-302.
• Selliah, S.; Brouillet, L. 2008. Molecular phylogeny of the North American eurybioid asters (Asteraceae: Astereae) based on the nuclear ribosomal internal and external transcribed spacers. Botany 86: 901-915.
• Semple, J. C. 2004. Chromosome number determinations in fam. Compositae, tribe Asterieae. VII. Mostly eastern North American and some Eurasian taxa. Rhodora 106: 253-272.
• Semple, J. C. 1981. A revision of the goldenaster genus Chrysopsis (Nutt.) Ell. nom. cons. (Compositae-Astereae). Rhodora 83: 323-384.
• Semple, J. C. 2006. Quadruple, triple, double, and simple pappi in the goldenasters, subtribe Chrysopsidinae (Asteraceae : Astereae). Sida 22: 503-531.
• Semple, J. C. 2004. Miscellaneous nomenclatural changes in Astereae (Asteraceae). Sida 21: 759-765.
• Semple, J. C. 2008. Cytotaxonomy and cytogeography of the goldenaster genus Heterotheca (Asteraceae: Astereae). Botany 86: 886-900.
• Semple, J. C. 1991. A multivariate morphometric study and revision of Aster subg. Doellingeria sect. Triplopappus (Compositae: Astereae): the Aster umbellatus complex. Canad. J. Bot. 69: 256-276.
• Semple, J. C.; Blok, V.; Heiman, P. 1980. Morphological, anatomical, habit and habitat differences among the goldenaster genera Chrysopsis, Heterotheca and Pityopsis (Compositae-Astereae). Canad. J. Bot. 58: 164-171.
• Semple, J. C.; Bowers, F. D. 1987. Cytogeography of Pityopsis Nutt., the grass-leaved goldenasters (Compositae-Astereae). Rhodora 89: 381-389.
• Semple, J. C.; Bowers, F. D. 1985. A revision of the goldenaster genus Pityopsis Nuttall (Compositae-Astereae).
• Semple, J. C.; Chinnappa, C. C. 1980. Karyotype evolution and chromosome numbers in Chrysopsis (Nutt.) Ell. sensu Semple (Compositae-Astereae). Canad. J. Bot. 58: 164-171.
• Sherff, E. E. 1937. The genus Bidens, 2 vol. Publ. Field Mus. Nat. Hist. Bot. Ser. 16: 1-709.
• Sherff, E. E. 1937. The genus Bidens Part 1. Field Mus. Nat. Hist., Bot. Ser. 16: 1-346.
• Sherff, E. E. 1965. Notes on varieties of Bidens connata and a hybrid with B. cernua. Rhodora 67: 59-62.
• Sherff, E. E. 1911. Tagopogon partensis x porrifolius. Torreya 11: 14-15.
• Shiflett, S. A.; Young, D. R. 2010. Avian seed dispersal on Virginia barrier islands: potential influence on vegetation community structure and patch dynamics. Amer. Midl. Naturalist 164: 91-106.
• Shinners, L. H. 1947. Revision of the genus Krigia Schreb. Wrightia 1: 187-206.
• Shontz, N. N.; Shontz, J. P. 1970. Galinsoga ciliata (Compositae): its arrival and spread in the northeastern United States. Rhodora 72: 386-392.
• Shumway, S. W.; Bertness, M. D. 1992. Salt stress limitation of seedling recruitment in a salt marsh plant community. Oecologia 92: 490-7.
• Sieren, D. J. 1970. A taxonomic revision of the genus Euthamia (Compositae). Ph.D. Dissertation Univ. IL, Champaigne-Urbana, IL,
• Sieren, D. J. 1981. The taxonomy of the genus Euthamia. Rhodora 83: 551-579.
• Siripun, K. C.; Schilling, E. E. 2006. Molecular confirmation of the hybrid origin of {Eupatorium godfreyanum (Asteraceae). Amer. J. Bot. 93: 319-325.
• Skvarla, J. J. et.al. 2003. The common occurrence of incompletely developed pollen of Eupatorium (Compositae: Eupatorieae). Pl. Syst. Evol. 243: 1-11.
• Sobey, D. G.; Barkhouse, P. 1977. The structure and rate of growth of the rhizomes of some forest herbs and dwarf shrubs of the New Brunswick-Nova Scotia border region. Canad. Field-Naturalist 91: 377-83.
• Solbrig, O. T. 1963. Subfamilial nomenclature of Compositae. Taxon 12: 229-35.
• Soreng, R. J.; Cope, E. A. 1991. On the taxonomy of cultivated species of the Chrysanthemum genus complex (Anthemideae-Compositae). Baileya 23: 145-165.
• Sorrie, B. A. 1998. Distribution of Drosera filiformis and D. Tracyi (Droseraceae): phytogeographic implications. Rhodora 100: 239-260. (Also Coreopsis)
• Sprague, T. A. 1928. The correct spelling of certain generic names. III. Kew Bull. 1928: 337-79.
• Stalter, R. 1979. The weeds of Long Island II. The Compositae. Proc. Northeast. Weed Sci. Soc. 33: 90-3.
• Steyermark, J. A. 1934. Studies in Grindelia. II. A monograph of the North American species of the genus Grindelia. Ann. Missouri Bot. Gard. 21: 433-608.
• Strother, J. L. 2000. Who named Euthamia (Compositae: Astereae) and when? Sida 19: 217-218.
• Sulborska, A. et.al. 2006. Morphology, anatomy and ultrastructure of yarrow (Achillea millefolium L.) floral nectaries. Acta Agrobotanica 59: 17-28.
• Sullivan, V. I. 1975. Pollen and pollination in the genus Eupatorium (Compositae). Canad. J. Bot. 53: 582-589.
• Sullivan, V. I. 1978. Putative hybridization in the genus Eupatorium (Compositae). Rhodora 80: 513-527.
• Sullivan, V. I. 1972. Investigations of the breeding systems, formation of auto- and alloploids and the reticulate pattern of hybridization in North American Eupatorium (Compositae). Ph.D. Dissertation Florida State Univ.,
• Susanna, A. et.al. 2006. The Cardueae (Compositae) revisited: insights from ITS, trnL-trnF, and matK nuclear and chloroplast DNA analysis. Ann. Missouri Bot. Gard. 93: 150-171.
• Susanna, A. et.al. 2003. Generic boundaries and evolution of characters in the Arctium group: A nuclear and chloroplast DNA analysis. Collectanea Botanica 26: 101-118.
• Taylor, R. J. 1987. Populational variation and biosystematic interpretations in weedy dandelions. Bull. Torrey Bot. Club 114: 109-120.
• Theis, N. et.al. 2007. The challenge of attracting pollinators while evading floral herbivores: patterns of fragrance emission in Cirsium arvense and Cirsium repandum (Asteraceae). Int. J. Plant Sci. 168: 587-601.
• Thomas, P. A. 2003. Sticky exudates on the inflorescences of Cirsium discolor (Asteraceae) and Penstenion digitalis (Scrophulariaceae) as possible defense against seed predators. Great Lakes Entomologist 36: 112-121.
• Tolliver, K. S.; Martin, D. W.; Young, D. R. 1997. Freshwater and saltwater flooding response for woody species common to barrier island swales. Wetlands 17: 10-8.
• Tolliver, K.; Young, D. R. 1996. Biotic mechanisms influencing seedling establishment during primary succession on a Virginia barrier island. ()
• Toman, J. 1972. A taxonomic survey of the genera Petasites and Endocellion. Folia Geobot. Phytotax. 7: 381-406.
• Tooker, J. F.; Reagel, P. F.; Hanks, L. M. 2002. Nectar sources of day-flying lepidoptera of central illinois. Ann. Ent. Soc. Amer. 95: 84-96.
• Torices, R.; Anderberg, A. A. 2009. Phylogenetic analysis of sexual systems in Inuleae (Asteraceae). Amer. J. Bot. 96: 1011-1019.
• Torrell, M et.al. 1999. Phylogeny in Artemisia (Asteraceae, Anthemideae) inferred from nuclear ribosomal DNA (ITS) sequences. Taxon 48: 721-736.
• Townsend, J. F.; Karaman-Castro, V. 2006. A new species of Boltonia (Asteraceae) from the ridge and valley physiographic province, U.S.A. Sida 22: 873-886.
• Tucker, A. O.; Maciarello, M. J.; Clancy, K 1999. Sweet goldenrod (Solidago odora, Asteraceae): a medicine, tea, and state herb. Econ. Bot. 53: 281-284.
• Turner, B. L.; Kim, K. J. 1990. An overview of the genus Pyrrhopappus (Asteraceae: Lactuceae) with an emphasis on chloroplast DNA restriction site data. Amer. J. Bot. 77: 845-850.
• Turner, B. L.; Mabry, T. J. 1964. Partition chromatography as applied to taxonomic problems in the Asteraceae. Taxon 13: 11-4.
• Turner, B. L.; Whalen, M. 1975. Taxonomic study of Gaillardia pulchella (Asteraceae-Heliantheae). Wrightia 5: 189-192.
• Urbatsch, L.; Baldwin, B. G.; Donoghue, M. J. 2000. Phylogeny of the coneflowers and relatives (Heliantheae: Asteraceae) based on nuclear rDNA internal transcribed spacer (ITS) sequences and chloroplast DNA restriction site data. Syst. Bot. 25: 539-565.
• Uttal, L. J. 1988. The correct name for Elliot's goldenrod. Rhodora 90: 157-168.
• Van Deelen, T. R. 1991. Baccharis halimifolia. ()
• Wagenknecht, B. L. 1960. Revision of Heterotheca sect. Heterotheca (Compositae). Rhodora 62: 61-76.
• Wahrmund, U. et.al. 2010. A molecular phylogeny reveals frequent changes of growth form in Carlina (Asteraceae). Taxon 59: 367-378.
• Wang, W. M. 2004. On the origin and development of Artemisia (Asteraceae) in the geological past. Bot. J. Linn. Soc. 145: 331-336.
• Watson, E. E. 1929. Contributions to a monograph of the genus Helianthus. Pap. Michigan Acad. Sci. 9: 305-475. (+ 39 plates)
• Weaver, S. E. 2001. The biology of Canadian weeds. 115. Conyza canadensis. Canad. J. Pl. Sci. 81: 867-875.
• Weiner, J. 2009. Is reproductive allocation in Senecio vulgaris plastic? Botany 87: 475-481.
• Weiner, J. et.al. 1998. Modeling the growth of individuals in plant populations: Local density variation in a strand population of Xanthium strumarium (Asteraceae). Amer. J. Bot. 85: 1638-1645.
• Wells, J. R. 1965. A taxonomic study of Polymnia (Compositae). Brittonia 17: 144-159.
• Werier, D. 2000. When an aster is no longer an aster. New York Flora Association Newsletter 11: 4-6.
• Westman, W. E.; Panetta, P. D.; Stanley, T. D. 1975. Ecological studies on reproduction and establishment of the woody weed, groundsel bush (Baccharis halimifolia L.: Asteraceae). Australian J. Agric. Res. 26: 855-70.
• Weston, L. A. et.al. 2005. A review of the biology and ecology of three invasive perennials in New York State: Japanese knotweed (Polygonum cuspidatum), mugwort (Artemisia vulgaris) and pale swallow-wort (Vincetoxicum rossicum). Pl. & Soil 277: 53-69.
• Whitney, G. G. 1984. The reproductive biology of raspberries and plant-pollinator community structure. Amer. J. Bot. 71: 887-894. (Also Prunus, Uvularia)
• Whittemore, A. 1987. The sectional nomenclature of Eupatorium (Asteraceae). Taxon 36: 618-620.
• Wiegand, K. M. 1924. Some changes in nomenclature. Rhodora 26(301): 1-5.
• Wiegand, K. M.; Weatherby, C. A. 1937. The nomenclature of the verticillate eupatoria. Rhodora 39: 297-306.
• Wild, J. D. et.al. 2003. Pollination and reproduction of Tussilago farfara (Asteraceae). Bot. Jahrb. Syst. 124: 273-285.
• Willemsen, R. O.; Rice, E. L. 1972. Mechanism of seed dormancy in Ambrosia artemisiifolia). Amer. J. Bot. 59: 248-257.
• Williams, C. E. et.al. 2000. Use of turtlehead (Chelone glabra L.) and other herbaceous plants to assess intensity of white-tailed deer browsing on Allegheny Plateau riparian forests, USA. Biol. Conserv. 92: 207-215. (Other genera/species discussed)
• Wise, M. J. et.al. 2008. Nutrient stress and gall flies interact to affect floral-sex ratio in gynomonoecious Solidago altissima (Asteraceae). Amer. J. Bot. 95: 1233-1239.
• Woo, S. L. et.al. 1991. The biology of Canadian weeds 99. Matricaria perforata Merat (Asteraceae). Canad. J. Pl. Sci. 71: 1101-1120.
• Young, D. R.; Erickson, D. L.; Semones, S. W. 1994. Salinity and the small-scale distribution of three barrier island shrubs. Canad. J. Bot. 72(9): 1365-72.
• Young, J. A. et.al. 1978. Milk thistle (Silybum marianum) seed germination. Weed Science 26: 395-398.
• Zavesky, L. et.al. 2005. Nuclear DNA content variation within the genus Taraxacum (Asteraceae). Folia Geobotanica 40: 91-104.
• Zdero, C.; Bohlmann, F. 1990. Systematics and evolution within the Compositae, seen with the eyes of a chemist. Pl. Syst. Evol. 171: 1-14.
• Zika, P. F. 2003. Notes on the provenance of some eastern wetland species disjunct in western North America. J. Torrey Bot. Soc. 130: 43-46.