别名：毛狼尾草;

科名：禾本科 Gramineae

属名：狼尾草属 Pennisetum

《中国植物志》第10(1)卷362页
  1．西藏狼尾草（拟）
  Pennisetum lanatum Klotz. in Bot. Erg, Waldem. Reise 65, t. 99. 1862: Hook. f. Fl. Brit. Ind. 7: 84. 1897; Bor, Grass. Burm. Ceyl. Ind. Pakist. 345. 1960. ——Pennisetum nepalense auct. non. Spreng. : Griseb. in Goett, Nachr. 86. 1868.
  多年生。根茎粗壮，蔓延而分枝。秆高25-75厘米。叶鞘常被毛，基部者密集而跨生，上部短于节间；叶舌具长1-2毫米的纤毛；叶片扁平，线形，长14-45厘米，宽0.4- 1.3厘米，无毛或被短刺毛。圆锥花序长5-15厘米，宽1.5-2.5厘米；主轴疏生短纤毛；刚毛暗淡绿色，长0.5-1.5厘米，通常两层，生长柔毛而呈羽毛状；小穗通常单生，卵状披针形，长0.4-0.5厘米；第一颖微小或长为小穗的1/2，先端钝；第二颖长为小穗的1/2，长椭圆形，先端锐，具3脉；第一外稃和第二外稃与小穗等长，披针形，锐尖头，具5脉；鳞被2；雄蕊3，花药顶端无毫毛；花柱基部联合。颖果长圆形，长约2.5毫米。叶片表皮细胞结构为上下皮表不同；上表皮脉间最中间1-3行为筒状五角形、壁薄、无或微波纹的长细胞，两边1-2行为筒状、壁厚、有波纹长细胞与短细胞交叉排列；下表皮脉间为长筒状、壁厚、有波纹长细胞与短细胞交叉排列。花果期8-10月。
  产我国西藏西部；多生于海拔7000-9 000米的较干燥的山坡上。缅甸、斯里兰卡以及喜马拉雅山区也有分布。

《Flora of China》 Vol. 22 (2006)
Pennisetum lanatum  Klotzsch
西藏狼尾草   xi zang lang wei cao
Perennial with extensive branching rhizomes clothed in cataphylls. Culms erect, 25–150 cm tall. Leaf sheaths usually pubescent; leaf blades linear, 10–45 × 0.4–1.3 cm, pubescent to villous or occasionally glabrous; ligule 1–2 mm. Inflorescence linear, 5–15 × 1.5–2.5 cm; axis loosely pubescent, with shallow angular ribs below the cupular involucre-scars; involucre enclosing 2–4 shortly pedicelled spikelets; bristles greenish, softly plumose, rarely almost glabrous, branched (often several times) above the base. Spikelets ovate-lanceolate, 4–5.5 mm; lower glume 1/3–2/5 as long as spikelet, 3-veined, subacute to rotund, rarely apiculate; upper glume 1/2 as long as spikelet, obtuse to apiculate; lower floret staminate, lemma as long as spikelet, acuminate; upper lemma slightly shorter than lower, acute; anthers without hairs at tip. Fl. and fr. Aug–Oct.
Dry mountain slopes; above 1500 m. W Xizang [Afghanistan, NW India, Kashmir, Nepal, Pakistan].
This is a distinctive species on account of its long, scaly rhizomes and branched bristles in the inflorescence.