Houstonia micrantha (Shinners) Terrell. Phen: Feb-Apr. Hab: Dunes, sandy soils, granitic flatrocks, disturbed areas, roadsides. Dist: E. and c. GA west to sc. KY, sw. TN, s. MO, nw. AR, south to w. FL Panhandle, s. MS, s. LA, and e. TX. In 2017-2018, found eastwards of its known native distribution on roadsides and other disturbed areas in Wake County, NC (B. England, pers. comm., 2017, 2018). Reported for Barren County, KY (Brock 2020).
Origin/Endemic status: Native
Syn: = Ar, Fl5, K1, K3, K4, Mo3, NcTx, Tn, WH3, Terrell (1996); = Hedyotis australis – Tx, Rogers (1987); = Houstonia pusilla – S, misapplied