长颖沿沟草Catabrosa capusii Franch
长颖沿沟草Catabrosa capusii Franch
2．长颖沿沟草（西藏植物志）图版31：9-12
Catabrosa capusii Franch. in Ann. Sci. Nat. (Paris)Ser. 6. 18: 282. 1884; Nevski et Socz. in Kom. Fl. URSS 2: 446. 1934; Bor in Rech. f. Fl. Iran. 70: 60. 1970; R. R. Mill in P. H. Davis, Fl. Turkey 9: 498. 1985. ——Catabrosa aquatica subsp. capusii(Franch. )Tzvel. in Nov. Syst. Pl. Vasc. 1968: 30. 1968. et in Fed. Poac. URSS 489. 1976; 内蒙古植物志7: 62. 1983. sphalm. det.——Catabrosa wallichii Hook. f. in Fl. Brit. Ind. 7: 312. 1896; 西藏植物志5: 142, 图版70. 图3-4. 1987. sphalm. det.
多年生，低矮草本。秆直立，高6-20厘米，基部有长匍匐茎或沉水的茎，节处生根。叶鞘闭合达1/2,松弛，光滑，长于节间；叶舌透明膜质，顶端钝圆，长约2毫米；叶片柔软，扁平，长3-8厘米，宽2-4毫米，两面无毛。圆锥花序狭窄，稍开展或紧缩近穗形，长2-5厘米，宽0.8-2.5厘米；分枝短，长约2厘米，常紧贴主轴或斜升；小穗含1-2小花，长3-3.5毫米；颖半透明膜质，黄色或黄绿色，顶端钝圆或呈啮蚀状，长圆形，具1-3脉，不清晰，第一颖长1.5-2毫米，第二颖长2-.3毫米；外稃顶端及边缘质薄，色浅，其余草质，黄褐色或带紫色，长2-2.7毫米，顶端常截平，有时具齿，具隆起3脉，光滑；内稃与外稃近等长，具2脊，光滑；花药黄色，长0.8-1.5毫米。花期6-8月。染色体2n＝20（Sokolovskaya 1939）。
产西藏（空喀山口、狮泉河、札达）。生于海拔3740-4900米高山沼泽边、水湿地及河滩。分布于土耳其、伊朗、塔吉克斯坦、吉尔吉斯斯坦及帕米尔。模式标本采自亚洲中部。
《Flora of China》 Vol. 22 (2006)
Catabrosa capusii Franchet
长颖沿沟草 chang ying yan gou cao
Catabrosa aquatica subsp. capusii (Franchet) Tzvelev.
Perennial, rhizomatous. Culms decumbent at base, up to 30(–60) cm tall. Leaf sheaths closed up to middle, loose, longer than internodes; leaf blades flat, soft, 3–8 cm × 2–4 mm, apex acute; ligule ca. 2 mm, obtuse. Panicle narrow, contracted, almost spikelike, interrupted below, 2–12 × 0.8–1.5 cm; branches less than 5 cm, adpressed or suberect, compactly spiculate to base. Spikelets with (1–)2 florets, 3–4 mm; glumes oblong, obscurely 1–3-veined, apex obtuse or erose, lower glume 0.5–2 mm, upper glume 1.5–2.3 mm; lemma 2–2.7 mm, brown flushed purple, smooth, apex truncate, denticulate. Anthers 1–1.5 mm. Fl. Jun–Aug.
Marshy ground and water meadows on high mountains; 3700–4900 m. Nei Mongol, Xizang [Kyrgyzstan, Tajikistan, Uzbekistan; SW Asia (N Iran, N Iraq, E Turkey)].
Young panicles of Catabrosa aquatica can resemble the narrow panicle of this species.
科名：禾本科 Gramineae
属名：沿沟草属 Catabrosa
2．长颖沿沟草（西藏植物志）图版31：9-12
Catabrosa capusii Franch. in Ann. Sci. Nat. (Paris)Ser. 6. 18: 282. 1884; Nevski et Socz. in Kom. Fl. URSS 2: 446. 1934; Bor in Rech. f. Fl. Iran. 70: 60. 1970; R. R. Mill in P. H. Davis, Fl. Turkey 9: 498. 1985. ——Catabrosa aquatica subsp. capusii(Franch. )Tzvel. in Nov. Syst. Pl. Vasc. 1968: 30. 1968. et in Fed. Poac. URSS 489. 1976; 内蒙古植物志7: 62. 1983. sphalm. det.——Catabrosa wallichii Hook. f. in Fl. Brit. Ind. 7: 312. 1896; 西藏植物志5: 142, 图版70. 图3-4. 1987. sphalm. det.
多年生，低矮草本。秆直立，高6-20厘米，基部有长匍匐茎或沉水的茎，节处生根。叶鞘闭合达1/2,松弛，光滑，长于节间；叶舌透明膜质，顶端钝圆，长约2毫米；叶片柔软，扁平，长3-8厘米，宽2-4毫米，两面无毛。圆锥花序狭窄，稍开展或紧缩近穗形，长2-5厘米，宽0.8-2.5厘米；分枝短，长约2厘米，常紧贴主轴或斜升；小穗含1-2小花，长3-3.5毫米；颖半透明膜质，黄色或黄绿色，顶端钝圆或呈啮蚀状，长圆形，具1-3脉，不清晰，第一颖长1.5-2毫米，第二颖长2-.3毫米；外稃顶端及边缘质薄，色浅，其余草质，黄褐色或带紫色，长2-2.7毫米，顶端常截平，有时具齿，具隆起3脉，光滑；内稃与外稃近等长，具2脊，光滑；花药黄色，长0.8-1.5毫米。花期6-8月。染色体2n＝20（Sokolovskaya 1939）。
产西藏（空喀山口、狮泉河、札达）。生于海拔3740-4900米高山沼泽边、水湿地及河滩。分布于土耳其、伊朗、塔吉克斯坦、吉尔吉斯斯坦及帕米尔。模式标本采自亚洲中部。
《Flora of China》 Vol. 22 (2006)
Catabrosa capusii Franchet
长颖沿沟草 chang ying yan gou cao
Catabrosa aquatica subsp. capusii (Franchet) Tzvelev.
Perennial, rhizomatous. Culms decumbent at base, up to 30(–60) cm tall. Leaf sheaths closed up to middle, loose, longer than internodes; leaf blades flat, soft, 3–8 cm × 2–4 mm, apex acute; ligule ca. 2 mm, obtuse. Panicle narrow, contracted, almost spikelike, interrupted below, 2–12 × 0.8–1.5 cm; branches less than 5 cm, adpressed or suberect, compactly spiculate to base. Spikelets with (1–)2 florets, 3–4 mm; glumes oblong, obscurely 1–3-veined, apex obtuse or erose, lower glume 0.5–2 mm, upper glume 1.5–2.3 mm; lemma 2–2.7 mm, brown flushed purple, smooth, apex truncate, denticulate. Anthers 1–1.5 mm. Fl. Jun–Aug.
Marshy ground and water meadows on high mountains; 3700–4900 m. Nei Mongol, Xizang [Kyrgyzstan, Tajikistan, Uzbekistan; SW Asia (N Iran, N Iraq, E Turkey)].
Young panicles of Catabrosa aquatica can resemble the narrow panicle of this species.
