康定三毛草Trisetum clarkei (Hook. f.) R. R. Stewart var. kangdingensis Z.L.Wu

科名：禾本科 Gramineae

属名：三毛草属 Trisetum

《中国植物志》第9(3)卷138页
  2b. 康定三毛草（变种）　图版34: 11-15
  Trisetum clarkei (Hook. f.) R. R. Stewart var. kangdingensis Z. L. Wu, 高原生物学集刊 2: 13-16. 1984.
  与原变种的主要区别：具长根茎；圆锥花序较大，穗状，长卵形，长达15厘米，宽1.5-3厘米，分枝长达8厘米。
  产四川。生于海拔3700米的水湿处。模式标本采自四川省康定县新都桥附近。

《Flora of China》 Vol. 22 (2006)
Trisetum kangdingense  (Z. L. Wu) S. M. Phillips & Z. L. Wu
康定三毛草   kang ding san mao cao
Basionym: Trisetum clarkei (J. D. Hooker) R. R. Stewart var. kangdingense Z. L. Wu, Acta. Biol. Plateau Sin. 2: 16. 1984 ["kangdingensis"].
Perennial with slender rhizomes. Culms usually solitary, erect from ascending base, 40–50 cm tall, 2–3 mm in diam., pubescent below panicle, 2–3-noded. Leaf sheaths longer than internodes, loose, lower sheaths pilose; leaf blades broadly linear, flat, 7–10 cm, 4–5 mm wide, scaberulous on both surfaces and margins; ligule 1.5–3 mm, truncate, margin ciliolate. Panicle scarcely exserted from uppermost leaf sheath, dense, elliptic in outline, lobed, 12–15 cm, pale yellowish; branches erect or slightly spreading, pubescent, densely clothed in branchlets and spikelets, lowest 6–8 cm. Spikelets 5.5–6 mm, florets 3; rachilla hairs ca. 1 mm; glumes slightly unequal, acuminate, lower glume narrowly lanceolate, ca. 5 mm, upper glume narrowly elliptic-oblong, 5.7–5.9 mm; lemma narrowly lanceolate-oblong, 5–5.3 mm, scabrid, awned from upper 1/4, apex entire; awn 3.2–3.4 mm, almost straight, slightly recurved at base, not twisted; palea keels scabrid. Anthers 1–1.1 mm. Fl. Aug.
* Damp ground near water; 3000–3700 m. Qinghai, Sichuan.
The spikelets of this species are the same as those of some forms of Trisetum spicatum, but it is excluded from both T. spicatum and T. clarkei by its strikingly more robust rhizomatous habit and large, dense, scarcely exserted panicles.