Compilation
Fimbristylis baldwiniana

Plants annual, cespitose, 5–50 cm, base soft; rhizomes absent. Leaves nearly distichous, 1/2 to equal length of culms; sheaths bristlyciliate apically, backs glabrous or hirtellous; ligule present, complete; blades narrowly linear, 1–1.5(–2) mm wide, flat to shallowly involute, margins ciliate-scabrid, adaxial and abaxial surfaces glabrous or pubescent. Inflorescences: anthelae simple or compound, mostly open, diffuse, ascending-branched, longer than broad; scapes slender, 1 mm thick, angular; proximalmost involucral bract longer or shorter than anthela. Spikelets tan to brown or redbrown, ovoid to lance-ovoid, 3–8 mm; fertile scales broadly oblong to ovate, 2 mm, acute to obtuse-angled, smooth, midrib reaching apex or excurrent as mucro. Flowers: stamens 1(–2); styles 2-fid, flat, fimbriate. Achenes white to brown, often iridescent, lenticular or obovoid to pyriform-obovoid, 1 mm, cancellate, with 5–12 longitudinal ribs per side, alternating with as many rows of horizontally rectangular pits; warts of achene more usually distributed, or achene (rarely) smooth. 2n = 30.