Philadelphus hirsutus Nuttall. Cumberland Philadelphus, Hairy Philadelphus, Hairy Mock-orange, Cumberland Mock-orange. Phen: Apr-May; Jun-Aug. Hab: Bluffs, rock outcrops, rocky woodlands, often with seepage, over mafic or calcareous rocks. Dist: 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, K3, K4, RAB, S, S13, Tn, Va, W; > Philadelphus hirsutus Nutt. – K1; > Philadelphus hirsutus Nutt. – Hu (1954-1956); > Philadelphus hirsutus Nutt. var. intermedius Hu – Hu (1954-1956); > Philadelphus hirsutus Nutt. var. nanus Hu – Hu (1954-1956); > Philadelphus sharpianus Hu – K1, Hu (1954-1956); > Philadelphus sharpianus Hu var. parviflorus Hu – Hu (1954-1956)
Heliophily: 6
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