藏芨芨草Achnatherum duthiei (Hook. f.) P. C. Kuo

科名：禾本科 Gramineae

属名：芨芨草属 Achnatherum

《中国植物志》第9(3)卷322页
  3．藏芨芨草（新组合）图版80: 9-14
  Achnatherum duthiei (Hook. f.) P. C. Kuo et S. L. Lu, comb. nov. ——Stipa duthiei Hook. f. Fl. Brit. Ind. 7: 232. 1897.
  多年生，根细弱。秆直立，丛生，平滑无毛，高50-80厘米，径2-3毫米，具3节，基部宿存短的枯萎的叶鞘。叶鞘微粗糙；基生叶舌平截，长约0.5毫米，秆生叶舌钝，长圆形，顶端微2齿裂，长约2毫米；叶片纵卷，长10-30厘米，宽1-1.5毫米，平滑无毛；圆锥花序狭窄，长20-25厘米，宽约1厘米，分枝2枚，直立，贴向主轴，平滑无毛，长3-10厘米，小穗柄长3-7毫米，具微毛；小穗长9-14毫米，淡黄白色，基部带紫褐色；两颖近等长、膜质，狭长披针形，具5脉，上部微粗糙；外稃长8-9毫米，背中部以下密生长柔毛，上部疏生短柔毛，顶端具2齿裂，齿顶端及边缘生短纤毛，具5脉，中脉与两侧脉在顶端汇合，向上延伸成芒，两边脉直达于2裂齿内，芒较粗硬，长14-18毫米，一回膝曲，芒柱扭转且被细小柔毛，芒针粗糙，基盘尖锐，长约1毫米，具柔毛；内稃长6-7毫米，具2脉，基部被柔毛，顶端具短毛；鳞被3，长约2毫米，披针形。颖果圆柱形，长约5毫米。花果期8-9月。
  产西藏、四川。生于山坡草甸及针叶林下，海拔4300米。模式标本采自喜马拉雅西部。

《Flora of China》 Vol. 22 (2006)
Achnatherum duthiei  (J. D. Hooker) P. C. Kuo & S. L. Lu
藏芨芨草   zang ji ji cao
Stipa duthiei J. D. Hooker, Fl. Brit. India 7: 232. 1896 ["1897"]; Achnatherum chingii var. laxum S. L. Lu.
Perennial, densely tufted. Culms erect, 50–80 cm tall, 1–2 mm in diam., 3–4-noded. Leaf sheaths smooth or scaberulous; leaf blades narrowly linear to setaceous, thin, flat or convolute when dry, 10–30 × 0.1–0.25 cm, abaxial surface smooth; ligule of culm leaves oblong, 2–2.5 mm. Panicle open or loosely contracted, 10–25 cm; branches paired, 3–10 cm, pairs distant, laxly ascending or lower spreading, few spiculate, bare in lower part. Spikelets 9–14 mm, pale yellowish, base brownish purple; glumes subequal, lanceolate, membranous, lower 3–5-veined, upper 5-veined, apex hyaline, acuminate; callus acute, 0.5–0.8 mm; lemma 7(–9) mm, back loosely pilose below middle, glabrous or sparsely pubescent above, apex 2-toothed, teeth 0.5–1 mm; awn 1.4–1.8 cm, persistent, delicate, weakly 1-geniculate, column loosely twisted, pubescent, bristle scabrid; palea as long as lemma. Anthers 3–4.5 mm, bearded at apex. Fl. and fr. Jul–Sep.
Mountain shrubland and in coniferous forest; 2500–4500 m. Qinghai, Shaanxi, Sichuan, Xizang, Yunnan [N India, Kashmir, Nepal].