Orbexilum Rafinesque. Scurfpea, Sampson's-snakeroot, Leather-root.
A genus of about 11 species, perennial herbs, of s. North America and Mexico (south to Chiapas).
Ref: Grimes (1988); Grimes (1990); Isely (1998); Turner (2008); Turner (2023c) In Flora of North America Editorial Committee (2023a); Vincent (2014). Show full citations.
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