窄穗细柄茅Ptilagrostis junatovii Grub.

科名：禾本科 Gramineae

属名：细柄茅属 Ptilagrostis

《中国植物志》第9(3)卷313页
  3．窄穗细柄茅（拟）图版77：15-20
  Ptilagrostis junatovii Grub. in Not. Syst. Herb. Inst. Bot. Acad. Sci. URSS 17: 3. 1955.
  多年生。须根细弱。秆直立，丛生，高15-30厘米，径约1毫米，光滑，具2节。叶鞘光滑无毛，短于节间；叶舌钝圆，长约2毫米，基生叶舌长约0.5毫米；叶片纵卷如针状，质地较硬，平滑，长5-15厘米，宽0.5-1毫米，茎生者短缩至1-2厘米。圆锥花序狭窄，长4-8(10)厘米，宽1-1.5厘米，分枝细弱，常孪生，顶端着生少数小穗，基部分枝处无膜质苞片；小穗长(5)6-7毫米，淡褐色，基部带紫色；颖几等长，披针形，具3脉，先端微粗糙；外稃长4.5-6毫米，具5脉，脉于顶端汇合，顶端具2微齿，背部1/2以下被柔毛，上部具平贴的短毛，基盘钝圆，长约1毫米，具短毛，芒自裂齿间伸出，长（1)1.5-1.7毫米，一回膝曲多成直角，芒柱扭转且具较长的柔毛，芒针具短毛，到先端毛渐少；内释微短于外稃，边缘膜质，具2脉，基部被柔毛；花药长约1.2毫米，顶端无毫毛。花果期7-9月。
  产新疆、西藏（德木拉山）、青海西北部、四川西部。生于高山草甸、山坡草地、河滩草丛、林下及灌丛中，海拔3200-4500米。模式标本采自新疆塔尔巴哈台。

《Flora of China》 Vol. 22 (2006)
Ptilagrostis junatovii  Grubov
窄穗细柄茅   zhai sui xi bing mao
Perennial, tufted. Culms erect, 15–30 cm tall, ca. 1 mm in diam., 2-noded. Leaf blades setaceous, involute, 5–15 cm, abaxial surface smooth, prominently veined; ligule obtuse, 0.5–2 mm. Panicle contracted, 4–8(–10) × 1–1.5 cm, lowest branches without sheathing membranous bract; branches usually paired. Spikelets brownish mauve, usually purplish at base; glumes elliptic, (5–)6–7 mm, 3-veined, apex scabrid; lemma 4.5–6 mm, pilose below middle, shortly pubescent above, apex 2-toothed; awn (1–)1.5–1.7 cm, geniculate in a right angle, hairs longer on column, fewer toward apex; palea slightly shorter than lemma, 2-veined. Anthers ca. 1.2 mm, bearded at apex. Fl. and fr. Jul–Sep.
Alpine meadows, grassy mountain slopes, floodlands, forests, under shrubs; 3200–4500 m. Xinjiang, Xizang [Kazakhstan, Mongolia, Russia].
This species is very close to Ptilagrostis concinna, but lacks a sheathing bract at the base of the panicle.