Orbexilum simplex (Nuttall ex Torrey & A. Gray) Rydberg. Subgenus: Poikadenia. Common name: Leather-root. Phenology: May-Jun. Habitat: Prairies, open woodlands. Distribution: AR and OK south to s. AL, MS, e. and w. LA, and e. TX; perhaps disjunct in IL (the single old specimen documenting its occurrence in IL also speculated as being a mislabeling).
Origin/Endemic status: Endemic
Synonymy ⓘ: = Ar, FNA11.1, Il, K4, NcTx, NS, POWO, S, SE3, Grimes (1988), Grimes (1990), Isely (1998), Turner (2008); = n/a — C; = Psoralea simplex Nutt. ex Torr. & A.Gray — S13, Tx. Basionym: Psoralea simplex Nutt. ex Torr. & A.Gray 1838
Links to other floras: = Orbexilum simplex - FNA11.1
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC
- Eastern Mountains and Piedmont: FAC
- Great Plains: FAC
- Midwest: FAC
Heliophily ⓘ: 9
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