Lechea mucronata Raf.

Stems 2–8 dm, spreading-villous; lvs villous beneath on the margins and midvein, otherwise glabrous or nearly so, often some of them whorled, those of the basal shoots ovate-elliptic, to 15 mm, the cauline ones lanceolate to oblanceolate or elliptic, 1–3 cm; fls densely aggregated on short lateral branches; inner sep very concave, smooth except for the broadly linear, roughened, sometimes sparsely hairy keel; outer sep rough, sometimes pilose, about equaling the inner; fr subglobose, about equaling the cal. Fields and open woods in dry or sandy soil; N.H. to Mich., Ill., Mo., and Okla., s. to Fla. and Tex. (L. villosa)