Brooklyn Botanic Garden


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Not peer reviewed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


References to Philadelphus

General Discussion

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.

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