Vasilis Teodoridis:
Poaceae | Arundinella
3. Arundinella setosa Trinius; Gram. Panic. 63. 1826.
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Perennial; tufted from a short rhizome with scaly buds. Culms erect or base geniculate; hard; (35–)60–180 cm tall; 1.5–4 mm in diam.; sometimes branched; 3–7(–9)-noded; nodes glabrous. Leaf sheaths shorter than internodes; glabrous or infrequently tuberculate-hispid; leaf blades linear; 10–40(–70) cm x 3–9 mm; usually glabrous; sometimes tuberculate-hispid; ligule ca. 0.5 mm. Panicle open or somewhat contracted; 10–45 cm; central axis and branches scabrid; branches 5–20 cm; stiffly ascending or spreading; solitary or fasciculate; loosely spiculate; pedicels scabrid; apex usually with long stiff hairs. Spikelets 5–6.5 mm; green tinged purple; glumes glabrous or rarely setose; scaberulous along veins; lower glume 4.5–5.5 mm; 3 (–5)-veined; upper glume 5-veined; lower floret staminate or barren; shorter than glumes or equaling lower glume; upper floret 2.5–3 mm; lemma apex awned; awn flanked by 2 slender erect bristles; bristles mostly 1–2.5 mm; awn geniculate with brown twisted column; 6–10 mm; callus hairs 1/4–1/3 length of lemma. Fl. and fr. Aug–Dec.
Open forests; forest margins; grassy hillsides; 200–2300 m. Anhui; Fujian; Guangdong; Guangxi; Guizhou; Hainan; Henan; Hubei; Hunan; Jiangsu; Jiangxi; Sichuan; Taiwan; Yunnan; Zhejiang [Bhutan; India; Indonesia; Malaysia; Myanmar; Nepal; New Guinea; Philippines; Sri Lanka; Thailand; Vietnam; Australia].