Spermacoce glabra Michaux. Common name: Smooth Buttonweed. Phenology: May-Oct. Habitat: Moist shores, bottomlands, riverside drawdowns, rocky riversides in the mountains, disturbed areas in the Coastal Plain. Distribution: C. MD, s. OH, c. IN, c. IL, MO, and e. KS south to s. SC, Panhandle FL, s. AL, s. MS, LA, and e. TX. Perhaps only introduced in some parts of our area; see Wieboldt et al. (1998) for discussion.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, C, F, Fl5, G, GrPl, GW2, Il, K4, NcTx, RAB, S, Tn, Tx, Va, WH3, Florentin, Florentin, & Salas (2020), Rogers (2005), Ward (2011b), (basionym); > Spermacoceodes glabra (Michx.) Kuntze — Bacigalupo (1972)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW
- Eastern Mountains and Piedmont: FACW
- Great Plains: FACW
- Midwest: FACW
Heliophily ⓘ: 7
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