Compilation
Coreopsis guineensis

Nearly glabrous annual, erect, 2 ft. high or more. Leaves tripartite bilobed or undivided, remotely denticulate; divisions (or the whole leaf) linear, narrowed at both ends, subsessile, 1–7 by 1/15– 3/5 in., margins subscabrous. Capitula campanulate-hemispherical, 1/2– 3/4 in. long, on peduncles of 2–7 in., in a lax open trichotomous cyme or solitary and terminating the branches. Outer scales of the involucre glabrous, narrowly linear, shorter and narrower than the inner ones which are sometimes not quite glabrous, succeeded by a few similar bracts near the top of the peduncle. Ligules large. Achenes linear-oblong, compressed, about 1/2 in. long, winged, setulose or nearly glabrous, ciliate on the wings. Aristæ erect, filiform, shorter than the achene, barbellate.