小颖沟稃草 xiao ying gou fu cao

Aniselytron agrostoides var. formosana (Ohwi) N. X. Zhao; A. formosana (Ohwi) L. Liu; Aulacolepis agrostoides (Merrill) Ohwi; A. agrostoides var. formosana Ohwi; Calamagrostis aniselytron Govaerts.

Culms slender, erect or geniculately ascending and rooting at lower nodes, 50–60 cm tall. Leaf sheaths smooth; leaf blades linear, 10–24 cm × 3–6 mm, scabrid, apex acuminate; ligule 0.3–1.5 mm, obtuse, erose or fimbriate. Panicle open with spreading branches, or somewhat contracted and narrower, 9–22 cm; branches whorled, smooth or scaberulous, bare in lower part, longest up to 7.5 cm; pedicels of lateral spikelets fairly uniform in length, up to 1 mm. Spikelets 2.5–4 mm, green; lower glume vestigial or very small, 0.2–0.7 mm, veinless, upper glume lanceolate, very variable, 1–2.7 mm, 1–3-veined, smooth, apex slenderly acuminate; callus hairs 0.05–0.2 mm; lemma as long as spikelet, attenuate upward, margins scarious, apex scarious, acute to acuminate, incurved; palea keels prominent, scabrid; rachilla 0.3–0.8 mm, glabrous. Anthers 1.2–1.5 mm. Fl. Jul.

Forests, grassy roadsides. Taiwan [Philippines].