三芒耳稃草 san mang er fu cao

Urachne acutigluma Steudel, Syn. Pl. Glumac. 1: 121. 1854; Garnotia caespitosa Santos; G. himalayensis Santos; G. khasiana Santos; G. tenuis Keng ex S. L. Chen (1990), not Santos (1950); G. kengii S. L. Chen; G. mindanaensis Santos; G. triseta Hitchcock; G. triseta var. decumbens Keng.

Perennial, tufted. Culms erect or ascending from decumbent base, 20–60 cm tall, usually unbranched, rooting at nodes, nodes pubescent. Leaf sheaths often hirsute along collar and margins, otherwise glabrous; leaf blades variable, linear to narrowly lanceolate, flat or folded, 5–20(–35) cm × 2–7 mm, adaxial surface hispid or scabrid, hairs tubercle-based or not, abaxial surface usually glabrous; ligule 0.2–0.5 mm. Panicle narrow, 8–25(–40) cm; branches appressed or loosely erect or ascending; spikelets in threes at lower nodes, paired or solitary toward apex. Spikelets 3–5 mm, base usually conspicuously pilose; glumes subequal with lower slightly longer, scabrid on veins, apex acute to awned; glume awns 0.5–7 mm with lower glume longer awned; lemma 1–3-veined, awned; awn 8–15 mm, straight or slightly flexuous, capillary, uniform throughout. Fl. and fr. Aug–Dec.

Moist mountain slopes, moist shady places along streams, mixed forests; 300–1700 m. Guangdong, Guangxi, Guizhou, Taiwan, Yunnan [Bangladesh, Bhutan, NE India, Indonesia, Malaysia, Myanmar, Philippines, N Vietnam; naturalized in Hawaii].

Garnotia kengii was published as a nomen novum for G. tenuis Keng ex S. L. Chen (1990), not Santos (1950).