Genus: Houstonia
Nomenclature
Houstonia Linnaeus, Sp. Pl. 1: 105. 1753.
sometimes placed in genus Hedyotis L.
List of Houstonia Species
References to Houstonia
- Beliveau, B. D.; Wyatt, R. 1999. Compatibility relationships in distylous bluets: Houstonia serpyllifolia and H. longifolia (Rubiaceae). Amer. Midl. Naturalist 141: 217-226.
- Church, S. A. 2003. Molecular phylogenetics of Houstonia (Rubiaceae): Descending aneuploidy and breeding system evolution in the radiation of the lineage across North America. Molecular Phylogenetics and Evolution 27: 223-228.
- Church, S. A.; Taylor, D. R. 2005. Speciation and hybridization among Houstonia (Rubiaceae) species: the influence of polyploidy on reticulate evolution. Amer. J. Bot. 92: 1372-1380.
- Lewis, W. H. 1962. Phylogenetic study of Hedyotis (Rubiaceae) in North America. Amer. J. Bot. 49: 855-865.
- Lewis, W. H. 1961. Merger of the North American Houstonia and Oldenlandia under Hedyotis. Rhodora 63: 216-223.
- Rogers, G. K. 2005. The genera of Rubiaceae in the southeastern United States, part II. Subfamily Rubioideae, and subfamily Cinchonoideae revisited. Harvard Papers in Botany 10: 1-45.
- Terrell, E. E. 1991. Overview and annotated list of North American species of Hedyotis, Houstonia, Oldenlandia Rubiaceae and related genera. Phytologia 71: 212-243.
- Terrell, E. E. et.al. 1986. Phylogenetic implications of diverse seed types, chromosome numbers, and pollen morphology in Houstonia Rubiaceae. Amer. J. Bot. 73: 103-115.
- Wang, R. J. et.al. 2001. The origin and distribution on genus Hedyotis L. J. Trop. Subtrop. Bot. 9: 219-228. (In Chinese)
- Wyatt, R. 1979. Factors determining fruit set in heterostylous bluets Houstonia caerulea Rubiaceae. Syst. Bot. 4: 103-114.