Flora of the Southeastern United States
2022 Edition

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FABACEAE

Thermopsis fraxinifolia (Nuttall) M.A. Curtis. Ash-leaf Golden-banner. Phen: Late May-Jul; Jul-Oct. Hab: Dry slopes and ridges. Dist: A Southern Appalachian endemic: w. NC and e. TN south to nw. SC and n. GA.

ID notes: In addition to the key characters above, T. fraxinifolia tends to have thinner stems than T. mollis, to average taller, and to have the inflorescence generally arching to reclining (vs. erect to sometimes arching). The phenologic separation (peak flowering times separated by about 6-7 weeks, generally with a 2 week period between the last flowering of T. mollis and the first flowering of T. fraxinifolia) provides strong support to the recognition of T. fraxinifolia and T. mollis at the species level.

Origin/Endemic status: Endemic

Syn: = K1, K3, K4, RAB, S, Tn, W, Chen, Mendenhall, & Turner (1994); = Thermopsis mollis var. fraxinifolia – SE3, Isely (1981), Isely (1998)

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