科名：禾本科 Gramineae

属名：香茅属 Cymbopogon

《中国植物志》第10(2)卷190页
  1．辣薄荷草（西藏植物志）
  Cymbopogon jwarancusa (Jones) Schult. Syst. Veg. Mant. 2: 458. 1824; Stapf in Kew Bull. 1906: 313, 354. 1906; Bor in Journ. Bomb. Nat. Mist. Soc. 52: 178. 1955; Bor, Grass. Burma Ceyl. Ind. Pakist. 128. 1960; Bor, in Rech. f. Fl. Iran. 70: 542. 1970; S. Soen. in Reinwardtia 9: 305. 1977; A. Cope in Nasir. Fl. Pakist. 143: 328. 1982; 西藏植物志5: 336. 图186. 1987. ——Andropogon jwarancusa Jones in Asiat. Res. 4: 109. 1795; Roxb. Fl. Ind. 1: 279. 1820; Hack. in DC. Monogr. Phan. 6: 599. 1889; Hook. f. Fl. Brit. Ind. 7: 203. 1897.——Andropogon himalayensis Gand. in Bull. Soc. Bot. Fr. 46: 421. 1899. non Steud. 1854.
  多年生草本，具短根状茎。秆直立，具鞘内分蘖，紧密丛生，高80-150（-200）厘米，粗壮，有4-6节。叶鞘苍白色，平滑无毛，基部变宽增大，宽约1.5厘米，宿存，干枯后反卷，草黄色；叶舌短，长0.5-1毫米；叶片线形，长20-50（-80）厘米，常内卷，秆生者较短小，扁平，宽2-5毫米，平滑无毛，先端长渐尖成丝形，基部狭窄，下面及边缘微粗糙。伪圆锥花序直立，长20-40厘米，狭窄，稠密，基部主枝具3-5节，第二次分枝上部着生2-4花序；佛焰苞长1.5-2厘米，一侧宽约2毫米，草黄色或带紫色；总梗长3-5毫米；总状花序长1.5-1.8（-2.2）厘米，具5节，基部与小穗柄不膨大；总状花序轴节间与小穗柄长约2毫米，全体密生等长于其小穗的丝状柔毛。无柄小穗长4.5-5毫米，黄绿色，基盘具短柔毛；第一颖披针形，质地较薄，亚纸质，宽约0.8毫米，具明显的2脊，几无翼，微粗糙，脊间无脉，具凹槽，顶端尖，第二颖与第一外稃等长或短于其第一颖，边缘具纤毛；第二外稃长约2毫米，具纤毛；先端或裂齿间伸出一细直短芒，芒长6-8毫米，微粗糙；雄蕊3，花药长约2毫米，桔黄色；柱头羽毛状，近小穗顶端之两侧伸出。颖果长圆形，胚长约为果体之半。有柄小穗雄性，长约5毫米；第一颖具5-7脉，中脉甚明显。染色体2n=20 （Ragh & Arora，1958；Mehra 1962；Gupta, 1969）。花果期第一次在3-5月，第二次为7-8月。
  产于四川西南部（会理、米易、雷波、金阳、瓦岗、宁南、布拖及普格等县）、西藏（察隅）；生于金沙江及怒江干热河谷流域，海拔1 400米以下的山坡草地和砾石沙滩上，有时形成单纯群落，分布于印度、巴基斯坦、不丹、尼泊尔。模式标本采自印度。
  秆叶是提取挥发油辣薄荷酮的原料，供医药用。

《Flora of China》 Vol. 22 (2006)
Cymbopogon jwarancusa  (Jones) Schultes
辣薄荷草   la bo he cao
Perennial, shortly rhizomatous; old basal sheaths papery, ribbonlike, often spirally curling. Culms densely tufted, moderately robust to wiry, 0.2–1.5 cm tall, lower internodes short, crowded. Leaf sheaths smooth, glabrous, congested and overlapping at base; leaf blades glaucous, involute or flat, 20–50 × 0.1–0.5 cm, glabrous, apex filiform; ligule 0.5–4 mm. Spathate compound panicle narrow, 10–40 cm; spatheoles in dense woolly clusters, straw-colored or becoming purplish, 1–2 cm; racemes 1–1.8(–2.2) cm; rachis internodes and pedicels ca. 2 mm, densely white-villous, hairs as long as spikelets; pedicel of homogamous pair not swollen. Sessile spikelet narrowly lanceolate, 4.5–5.5 mm; lower glume thin, concave, glabrous, sharply 2-keeled, keels scabrid upward, not winged, 0(–3)-veined between keels; upper lemma 2-lobed; awn almost straight, column and limb weakly differentiated, 0.5–1 cm. Pedicelled spikelet 5–6 mm. Fl. and fr. Mar–May and Jul–Aug. 2n = 20.
Mountain slopes, dry valleys. SW Sichuan, Xizang, Yunnan (Yuanmou) [Afghanistan, Bhutan, N India, Nepal, Pakistan; SW Asia (Iran, Iraq, Oman)].