长穗碱茅Puccinellia thomsonii (Stapf) R. R. Stew.
长穗碱茅Puccinellia thomsonii (Stapf) R. R. Stew.
4．长穗碱茅（西藏植物志）图版28：17
Puccinellia thomsonii (Stapf) R. R. Stew. in Brittonia 5: 418. 1945; Bor, Grass. Burma Ceyl. Ind. Pakist. 563. 1960. et Rech. f. Fl. Iran. 70: 67. 1970; Th. A. Cope in Nasir. Fl. Pakist. 143: 433. 1982; 西藏植物志5: 124. 1987. ——Glyceria thomsonii Stapf in Hook. f. Fl. Brit. Ind. 7: 347. 1896. ——Atropis thomsonii(Stapf)Panp. in Fl. Carac. 77. 1930.
多年生，密丛型。秆高20-40厘米，较粗壮，直径约3毫米，有3-5节，节常膝曲。叶鞘疏松，长于其节间，有时背部压扁成脊，顶生叶鞘长约10厘米，常包藏其花序下部；叶舌宽卵形，长约3毫米；叶片长6-18厘米，宽1-3毫米，扁平或对折或内卷，顶端渐尖，上面与边缘微粗糙。圆锥花序开展，长12-20厘米，宽2-3厘米；分枝斜升，长3-5厘米，孪生，微粗糙，下部裸露，侧生小穗柄粗短；小穗含3-5小花，长6 (-9)毫米；颖长圆形，先端尖，长约2毫米，狭窄，第一颖长2.5 (-3)毫米，中脉脊状；外稃椭圆形，长3.5-4（-4.5)毫米，中脉直达顶端，成脊状，先端尖，基部无毛，边缘狭膜质；内稃较窄而短，脊下部平滑，上部有糙刺；花药长2-2.6（-3）毫米。花果期6-7月。
产西藏（申扎、拉萨）。生于盆地平缓开旷坡地上，海拔4300-5200米。分布于伊朗、中亚、巴基斯坦、印度。模式标本采自克什米尔地区。
本种以植株较粗壮，小穗长6毫米，颖片与外稃均较长，外稃长3.5-4毫米，狭窄，顶端尖，无毛；花药大，长2.2-3毫米而易区别。
《Flora of China》 Vol. 22 (2006)
Puccinellia thomsonii (Stapf) R. R. Stewart
长穗碱茅 chang sui jian mao
Glyceria thomsonii Stapf in J. D. Hooker, Fl. Brit. India 7: 347. 1896 ["1897"]; Atropis thomsonii (Stapf) Pampanini.
Perennial, densely tufted. Culms stout, 20–40 cm tall, 1.5–3 mm in diam., 3–5-noded, nodes often geniculate. Leaf sheaths loose, terminal sheath ca. 10 cm, often enclosing base of inflorescence; ligule ca. 3 mm, broadly ovate; leaf blade flat or conduplicate or inrolled, 6–18 cm, 1–3 mm wide, margins and adaxial surface scabrid. Panicle spreading, 12–20 × 2–3 cm; branches paired, 3–5 cm, obliquely ascending, scabrid, lower part naked. Spikelets 5–9 mm, florets 3–5; glumes oblong, apex acuminate, lower glume 1.8–2.5(–3) mm, upper glume 2.2–3.2 mm; lemma 3.5–4(–4.5) mm, glabrous, keeled toward apex, apex acuminate; palea keels smooth on lower part, scabrid upward; anthers 2–2.6 mm. Fl. Jun–Jul.
Open basins; 4000–5200 m. Xizang [Pakistan].
科名：禾本科 Gramineae
属名：碱茅属 Puccinellia
4．长穗碱茅（西藏植物志）图版28：17
Puccinellia thomsonii (Stapf) R. R. Stew. in Brittonia 5: 418. 1945; Bor, Grass. Burma Ceyl. Ind. Pakist. 563. 1960. et Rech. f. Fl. Iran. 70: 67. 1970; Th. A. Cope in Nasir. Fl. Pakist. 143: 433. 1982; 西藏植物志5: 124. 1987. ——Glyceria thomsonii Stapf in Hook. f. Fl. Brit. Ind. 7: 347. 1896. ——Atropis thomsonii(Stapf)Panp. in Fl. Carac. 77. 1930.
多年生，密丛型。秆高20-40厘米，较粗壮，直径约3毫米，有3-5节，节常膝曲。叶鞘疏松，长于其节间，有时背部压扁成脊，顶生叶鞘长约10厘米，常包藏其花序下部；叶舌宽卵形，长约3毫米；叶片长6-18厘米，宽1-3毫米，扁平或对折或内卷，顶端渐尖，上面与边缘微粗糙。圆锥花序开展，长12-20厘米，宽2-3厘米；分枝斜升，长3-5厘米，孪生，微粗糙，下部裸露，侧生小穗柄粗短；小穗含3-5小花，长6 (-9)毫米；颖长圆形，先端尖，长约2毫米，狭窄，第一颖长2.5 (-3)毫米，中脉脊状；外稃椭圆形，长3.5-4（-4.5)毫米，中脉直达顶端，成脊状，先端尖，基部无毛，边缘狭膜质；内稃较窄而短，脊下部平滑，上部有糙刺；花药长2-2.6（-3）毫米。花果期6-7月。
产西藏（申扎、拉萨）。生于盆地平缓开旷坡地上，海拔4300-5200米。分布于伊朗、中亚、巴基斯坦、印度。模式标本采自克什米尔地区。
本种以植株较粗壮，小穗长6毫米，颖片与外稃均较长，外稃长3.5-4毫米，狭窄，顶端尖，无毛；花药大，长2.2-3毫米而易区别。
《Flora of China》 Vol. 22 (2006)
Puccinellia thomsonii (Stapf) R. R. Stewart
长穗碱茅 chang sui jian mao
Glyceria thomsonii Stapf in J. D. Hooker, Fl. Brit. India 7: 347. 1896 ["1897"]; Atropis thomsonii (Stapf) Pampanini.
Perennial, densely tufted. Culms stout, 20–40 cm tall, 1.5–3 mm in diam., 3–5-noded, nodes often geniculate. Leaf sheaths loose, terminal sheath ca. 10 cm, often enclosing base of inflorescence; ligule ca. 3 mm, broadly ovate; leaf blade flat or conduplicate or inrolled, 6–18 cm, 1–3 mm wide, margins and adaxial surface scabrid. Panicle spreading, 12–20 × 2–3 cm; branches paired, 3–5 cm, obliquely ascending, scabrid, lower part naked. Spikelets 5–9 mm, florets 3–5; glumes oblong, apex acuminate, lower glume 1.8–2.5(–3) mm, upper glume 2.2–3.2 mm; lemma 3.5–4(–4.5) mm, glabrous, keeled toward apex, apex acuminate; palea keels smooth on lower part, scabrid upward; anthers 2–2.6 mm. Fl. Jun–Jul.
Open basins; 4000–5200 m. Xizang [Pakistan].
