Smilax rotundifolia Linnaeus. clade: B5. Common Greenbriar, Bullbriar, Horsebriar. Phen: Apr-May; Sep-Nov (and persisting). Hab: Dry-mesic to mesic forests and woodlands, bottomland and riparian forests, swamps, pond margins, bluffs, flatwoods, prairies, old fields, fencerows, pastures, roadsides. Dist: NS, s. ON, nc. IL, and c. MO south to n. FL and e. TX.
Origin/Endemic status: Native
Syn: = Ar, C, ETx1, F, FNA26, G, GW1, Il, K1, K3, K4, Mi, Mo1, NcTx, NE, NY, Pa, RAB, S, Tx, Va, W, WH3, WV, Bullard & Allen (2013), Coker (1944), Judd (1998)