by Science Staff
Not peer reviewed
Last modified: 04/08/2013
Philadelphus L., Sp. Pl. 470. 1753. Gen. Pl. 211. 1754. Syringa Mill., Gard. Dict. Abr. ed. 4. 1754, nom. illeg. (Art. 53.1). LECTOTYPE: Philadelphus coronarius L., designated by Small & Rydberg (1905).
Key to the species of Philadelphus
1. Flowers and fruits 5 or more in a determinate raceme; leaves pubescent beneath in axils of veins, along veins, and extending onto blade...Philadelphus coronarius
1. Flowers and fruits in cymules of 3, or solitary; leaves pubescent beneath in axils of veins and along veins only, not extending onto blade...Philadelphus inodorus
List of Philadelphus Species
- Philadelphus coronarius
- Philadelphus incanus - excluded species
- Philadelphus inodorus
- Philadelphus pubescens - excluded species
This genus is comprised of about 40 species throughout the northern hemisphere; none are native to the NY metropolitan region. Often planted for their mostly showy and fragrant flowers; there exist numerous hybrids making the distinction between species difficult. The reports of taxa like P. pubescens or P. incanus may reflect mis-identifications of species and/or hybrids.