The Toxicity of Extracts of Tephrosa virginiana (Fabaceae) in Oklahoma

Abstract

The Hale Scout Reservation is located in the Ouachita Mountains of  southeastern Oklahoma, a region of high plant diversity in the state. A vascular plant inventory yielded 463 species of vascular plants in 288  genera and 99 families. The largest families were the Asteraceae (with 65 species) and Poaceae (56). The flora consisted of 120 annuals, 1 biennial,  and 342 perennials. Forty-two non-native species were collected, representing 8.8% of the flora. Sixteen species tracked by the Oklahoma Natural Heritage Inventory were present: Amorpha ouachitensis (S1), Aristolochia serpentaria (S1), Baptisia nuttalliana (S2), Brachyelytrum  erectum (S1), Brasenia schreberi (S1), Carex ouachitana (S1), Chionanthus virginicus (S2), Clematis crispa (S1), Didiplis diandra (S1S2), Galium arkansanum (S2), Houstonia ouachitana (S1), Juncus repens (S1), Modiola caroliniana (S2), Monotropa hypopithys (S1), Muhlenbergia bushii (S1), and Ribes cynosbati (S2) (Oklahoma Natural Heritage Inventory, 2010).