别名：茨菇草;催生草;

科名：禾本科 Gramineae

属名：大油芒属 Spodiopogon

《中国植物志》第10(2)卷055页
  2.箭叶大油芒（禾本科图说）
  Spodiopogon sagittifolius Rendle in Journ. Linn. Soc. Bot. 36: 352. 1936;中国主要植物图说·禾本科767, 图712. 1959.
  多年生草本。秆直立，高60-100厘米，直径约2毫米，具3-4节。叶鞘短于其节间，除鞘口生柔毛外，平滑无毛；叶舌膜质，长2-6毫米，紧贴其背部生柔毛；叶具柄，下部柄可长达10厘米，向上逐渐变短，最上部者长约5毫米；叶片线状披针形，长5-30厘米，宽5-15毫米，分蘖叶较短小，顶端渐尖，基部2裂呈箭镞形，上面无毛，下面生疣基柔毛，边缘微粗糙。圆锥花序长9-15厘米，宽约5厘米；分枝轮生，细弱，开展，长约5厘米，腋间生柔毛，下部长裸露且平滑无毛，顶端1-3节着生一无柄和一有柄小穗；总状花序轴节间及小穗柄约等长于小穗，无毛或边缘具纤毛，先端膨大呈倒圆锥形；小穗长约6毫米，黄绿色，基部具短髯毛，两颖近相等，草质；第一颖具11-13脉，脉间具柔毛，顶端尖；第二颖具8-11脉；外稃与内稃近于等长，长约5毫米，透明膜质，边缘具纤毛；第一外稃先端浅裂，具1脉或由裂片间伸出成小尖头；雄蕊3枚，花药长约3毫米；第二小花两性，第二外稃狭窄，下部具3脉，深裂达稃体之2/3，裂齿间伸出膝曲之芒；芒长12-20毫米，芒柱扭转，长约1厘米；内稃宽大，长约5毫米，边缘具纤毛；花药桔黄色，长约3.5毫米，柱头细长，黄棕色，长4-5毫米，自小穗之顶端伸出；子房长圆形，长约1.5毫米。花果期秋季。
  产于我国去南；生于海拔1500-1800米的山地林下。模式标本采自云南蒙自。

《Flora of China》 Vol. 22 (2006)
Spodiopogon sagittifolius  Rendle
箭叶大油芒   jian ye da you mang
Perennial from a short knotty rhizome. Culms erect, 60–100 cm tall, 2–3 mm in diam., 3–4-noded, unbranched. Leaf sheaths glabrous; leaf blades linear-lanceolate, 8–30 × 0.5–1.5 cm, abaxial surface tuberculate-pilose, adaxial surface glabrous, margins smooth, base of lower blades deeply sagittate with pilose pseudopetiole up to 10 cm and acuminate lobes to 1.5 cm, apex acuminate; ligule 2–6 mm. Panicle open, lanceolate in outline, 9–20 cm; branches 2–5 cm, pilose in axils, unbranched, tipped by a solitary spikelet, a spikelet pair, or 3 spikelets; disarticulating at maturity, rachis internodes (when present) and pedicels slenderly clavate, 3/4 as long to equaling spikelets, shortly ciliate. Spikelets 4–6 mm, yellowish green; callus hairs ca. 1.5 mm; lower glume lanceolate-oblong, pilose, 11–13-veined, veins smooth, apex subacute; upper glume similar, 8–11-veined, emarginate; lower floret staminate, palea well developed; upper lemma 2-lobed to below middle; awn 12–20 mm. Anthers 3.5–4 mm. Fl. and fr. autumn.
* Mountain slopes, forests, grasslands; 1500–1800 m. Yunnan.
Spodiopogon lacei Hole, from Bhutan, NE India, N Myanmar, and N Thailand, is another species with sagittate leaf blades. It differs in its more robust culms to 2.5 m tall and 3–4 mm thick; denser, brownish panicle of 2- or 3-noded, dense racemes with shorter, clavate rachis internodes; and by the upper glume of the sessile spikelet, which is strongly keeled and smooth without prominent veins.