科名：禾本科 Gramineae

属名：香茅属 Cymbopogon

《中国植物志》第10(2)卷200页
  10. 细穗香茅（拟）
  Cymbopogon microstachys (Hook. f.) S. Soen. in Reinwardtia 9: 364. fig. 39A. 1977.——Andropogon nardus var. microstachys Hook. f. Fl. Brit. Ind. 7: 207. 1897. ——Cymbopogon flexuosus var. microstachys (Hook. f.) Bor in Journ. Bomb. Nat. Hist. Soc. 52: 16. 1954.
  多年生高大密丛草本，具粗短根状茎。秆直立，高1.5-2米，直径达1厘米。叶鞘伸长，质厚，内面橙色，稍卷转，下面鞘节部分生细柔毛；叶舌厚膜质或纸质，长5-6毫米，顶端蚀齿状，两侧呈耳状下延；叶片长线形，长可达50厘米以上，宽1-1.2厘米，中脉粗壮，基部狭窄成柄状，与叶鞘相接的叶颈部分生微毛，下面粉绿色，边缘粗糙。伪圆锥花序大，长50厘米左右，多回复合，分枝细长疏松开展，着生少数有距离的小枝；佛焰苞长1-1.5厘米；总梗长2-5毫米，无毛；总状花序长10-13毫米；具2-3节，细瘦；总状花序轴节间与小穗柄边缘生柔毛。无柄小穗长3.5-4毫米，第一颖披针形，宽约0.8毫米，脊间无脉或具1-2脉，背部扁平或下部稍凹，上部具窄翼，边缘粗糙，顶端渐尖或有微齿；雄蕊3，花药长约1.5毫米；第二外稃先端伸出直芒，芒长5-8毫米。有柄小穗狭小，长约3毫米，宽约0.5毫米，第一颖具7脉，脉上部粗糙。染色体2n=30。花果期8-10月。
  产于云南南部（西双版纳）；生于海拔1200米的草坡或林缘开旷的草地上，分布于印度、缅甸至泰国。模式标本采自印度。
  叶含精油，为较好的含挥发油资源植物。

《Flora of China》 Vol. 22 (2006)
Cymbopogon microstachys  (J. D. Hooker) Soenarko
细穗香茅   xi sui xiang mao
Andropogon nardus Linnaeus var. microstachys J. D. Hooker, Fl. Brit. India 7: 207. 1896 ["1897"]; Cymbopogon flexuosus (Nees ex Steudel) Will. Watson var. microstachys (J. D. Hooker) Bor.
Perennial from a stout rootstock. Culms fairly slender to robust, 1.5–2 m tall, up to 1 cm in diam., nodes glabrous. Leaf sheaths glabrous, shortly auriculate; leaf blades linear, glaucous, 40–75 × 1–1.2 cm, glabrous, scabrid, base narrowed nearly to midrib on lower blades, apex finely acuminate; ligule 5–6 mm. Spathate compound panicle narrow or somewhat spreading, decompound, yellowish green or tinged purplish, up to 60 cm or more, branches lax, raceme pairs not densely clustered; spatheoles narrowly elliptic, 1–1.5 cm; racemes 1–1.3 cm; rachis internodes and pedicels pilose on margins; pedicel of homogamous pair not swollen. Sessile spikelet narrowly lanceolate-oblong, 3.5–4 × ca. 0.8 mm; lower glume flat or shallowly concave below middle, frequently slightly transversely wrinkled, sharply 2-keeled throughout, keels scarcely winged, wings not more than 0.1 mm wide, obscurely 1–3-veined between keels or veinless; upper lemma awned; awn 0.6–0.8 cm. Pedicelled spikelet 3–4 mm. Fl. and fr. Aug–Oct. 2n = 30.
Rocky hill slopes, forest margins; ca. 1200 m. S Yunnan [India, Myanmar, Thailand].
This species is part of the complex centered around Cymbopogon khasianus and is distinguished mainly by its small racemes and spikelet parts.