*Euphorbia prostrata Aiton. Phen: Jan-Dec. Hab: Crevices of pavement or sidewalks, disturbed places. Dist: Probably native of tropical America and only naturalized in our area, but possibly native in the southern parts of the Southeastern United States.
Origin/Endemic status: Native
Synonymy: = Ar, Bah, C, FNA12, GrPl, K3, K4, Mex, Mi, NE, Tn, Tx, Va, Govaerts, Frodin, & Radcliffe-Smith (2000); = Chamaesyce prostrata (Aiton) Small – Fl2, Il, K1, NcTx, S, WH3; = Euphorbia chamaesyce L. – F, G, RAB, misapplied; = n/a – Pa