Philadelphus hirsutus Nuttall. Common name: Cumberland Philadelphus, Hairy Philadelphus, Hairy Mock-orange, Cumberland Mock-orange. Phenology: Apr-May; Jun-Aug. Habitat: Bluffs, rock outcrops, rocky woodlands, often with seepage, over mafic or calcareous rocks. Distribution: A Southern Appalachian species: sw. VA and KY south and west to w. NC, TN, n. GA, and n. AL.

Origin/Endemic status: Endemic

Taxonomy Comments: P. sharpianus Hu, known from e. TN and nc. AR, is similar to P. hirsutus, allegedly differing in the hypanthium glabrous (vs. more or less pubescent), the leaves strigose-pilose above, glabrous or sparsely strigose or with the nerves only villous beneath (vs. scabrous-hirsute above, uniformly villous beneath); it is probably best considered only a form of P. hirsutus. P. hirsutus is cultivated and it may escape outside of the range stated.

Synonymy ⓘ: = Ar, C, F, FNA12, G, K4, RAB, S, S13, Tn, Va, W; > Philadelphus hirsutus Nutt.; > Philadelphus hirsutus Nutt. — Hu (1954-1956); > Philadelphus hirsutus Nutt. var. intermedius S.Y.Hu — Hu (1954-1956); > Philadelphus hirsutus Nutt. var. nanus S.Y.Hu — Hu (1954-1956); > Philadelphus sharpianus S.Y.Hu — Hu (1954-1956); > Philadelphus sharpianus S.Y.Hu var. parviflorus S.Y.Hu — Hu (1954-1956). Basionym: Philadelphus hirsutus Nutt. 1818

Links to other floras: = Philadelphus hirsutus - FNA12

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Heliophily ⓘ: 6