| 学名(拉丁名) | Kobresia myosuroides subsp. bistaminata |
| 中文名 | 二蕊嵩草 |
| 中文科名 | 莎草科 |
| 拉丁属名 | Kobresia |
| 类型 | species |
| 拉丁科名 | Cyperaceae |
| 学名(拉丁名) | Kobresia myosuroides subsp. bistaminata |
| 中文名 | 二蕊嵩草 |
| 中文科名 | 莎草科 |
| 类型 | |
| 拉丁科名 | CYPERACEAE |
| 学名(拉丁名) | Kobresia myosuroides subsp. bistaminata |
| 中文名 | 二蕊嵩草 |
| 中文科名 | 莎草科 |
| 类型 | |
| 拉丁科名 | CYPERACEAE |
| 学名(拉丁名) | Kobresia myosuroides subsp. bistaminata |
| 中文名 | 二蕊嵩草 |
| 拉丁属名 | Kobresia |
| 类型 | species |
| 拉丁科名 | Cyperaceae |
| 学名(拉丁名) | Kobresia myosuroides subsp. bistaminata |
| 类型 |
APG IV系统 |
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根状茎密丛生。基部干枯的宿存叶鞘褐色至暗褐色，有光泽。秆纤细，高15—30厘米，粗约0.5毫米，柔软，钝三棱形。叶短于秆，叶片丝状，柔软，边缘内卷。穗状花序线状圆柱形，长1—3.5厘米，粗约1.5毫米；支小穗稍疏生，侧生的雌性或雄雌顺序，雄雌顺序的支小穗在基部1朵雌花之上具1朵雄花，雄花具2或3枚雄蕊；鳞片长圆状卵形，长约2毫米，顶端钝、圆或渐尖，褐色，薄纸质，边缘与上部膜质；先出近椭圆形或长圆形，长约2毫米，膜质，黄褐色，边缘分离几达基部，背面具微粗糙的2脊。小坚果倒卵形或长圆状倒卵形，扁三棱形或双凸状，长约1.5毫米，褐色，有光泽，基部几无柄，顶端具极短喙。花柱基部稍增粗，柱头3个，有时2个。
产德钦；生于高山灌丛草甸，海拔4300—4400米。内蒙古、甘肃、青海、新疆、四川、西藏也有。
Kobresia bistaminata W. Z. Di & M. J. Zhong, Acta Bot. Boreal.-Occid. Sin. 6: 275. 1986.
Basal sheaths brown to dark brown. Inflorescence 1-2.5 × ca. 0.2 cm. Glumes pale brown to dark brown, 2-3 mm. Prophylls oblong or oblong-ovate, 2.2-2.8 mm. Nutlets 1.8-2.3 mm (including beak). Stigmas usually 2 (sometimes 3, or both 2 and 3 on same plant). Fl. and fr. Jun-Sep.
Alpine meadows, grassy slopes, among shrubs; 2100-4500 m. Gansu, Nei Mongol, Ningxia, Qinghai, Sichuan, Xinjiang, Xizang.
The frequent bistigmatic tendency found in Chinese plants has not been noted elsewhere in the range of the widespread circumboreal Kobresia myosuroides. A similar tendency (though to a lesser degree) is also found in Chinese K. capillifolia. Further work may confirm that specific rank for the bistigmatic "Greater Tibetan" taxon is more appropriate.
The frequent bistigmatic tendency found in Chinese plants has not been noted elsewhere in the range of the widespread circumboreal Kobresia myosuroides. A similar tendency (though to a lesser degree) is also found in Chinese K. capillifolia. Further work may confirm that specific rank for the bistigmatic "Greater Tibetan" taxon is more appropriate.
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