甘肃薹草Carex kansuensis
中文名（Chinese Name）：甘肃薹草
学名（Scientific Name）：Carex kansuensis Nelmes
英文名（English Common Name）：
别名（Chinese Common Name）：甘肃苔草
异名（Synonym）：
科属（Family & Genus）：莎草科（Cyperaceae）薹草属
形态特征（Description）：根状茎短。秆丛生，高45-100厘米，锐三棱形，坚硬，基部具紫红色、无叶片的叶鞘。叶短于秆，宽5-7毫米，平张，边缘粗糙。苞片最下部的短叶状，边缘粗糙，上部的刚毛状，无鞘，短于花序。小穗4-6个，接近，顶生1个雌雄顺序；其余的雌性，在雌小穗基部有时具少数雄花，花密生，长圆状圆柱形，长1.5-3.5厘米；小穗柄纤细，下部的长约2厘米，下垂；雌花鳞片椭圆状披针形，顶端渐尖，长4-4.5毫米，暗紫色，边缘具狭的白色膜质。果囊近等长于鳞片，压扁，麦秆黄色，有时上部黄褐色或具紫红色斑点，无脉，顶端急缩成短喙，喙口具2齿。小坚果疏松地包于果囊中，长圆形或倒卵状长圆形，三棱形，长约2毫米；柱头3个。花果期7-9月。
分布（Distribution）：产陕西、甘肃、青海、四川、云南及西藏，生于海拔3400-4600米的高山灌丛草甸、湖泊岸边及湿润草地。
用途（Use）：
引自中国植物志英文版FOC Vol. 23 Page 303, 306
Carex kansuensis Nelmes, Bull. Misc. Inform. Kew. 1939: 201. 1939.
甘肃薹草 gan su tai cao| Cyperaceae | Carex
Rhizome short. Culms 45-100 cm tall, acutely trigonous, firm, clothed at base with purple bladeless sheaths. Leaves shorter than culm, blades broadly linear, 5-7 mm wide, flat, margins scabrous. Involucral bracts sheathless, lowest bracts shortly bladed, shorter than inflorescence, scabrous on margins, upper ones setaceous. Spikes 4-6, approximate; terminal spike gynaecandrous; lateral spikes female with a few male flowers at base, densely many flowered, oblong-cylindric, 1.5-3.5 cm; lowest peduncle (ca. 2 mm) slender, pendulous. Female glumes dark purple, elliptic-lanceolate, 4-4.5 mm, margins narrowly white hyaline, apex acuminate. Utricles stramineous, subequaling glume, compressed, sometimes upper yellow-brown or purple punctate, nerveless, apex abruptly contracted into a short beak, orifice 2-toothed. Nutlets loosely enveloped, oblong or obovate-oblong, trigonous, ca. 2 mm; stigmas 3. Fl. and fr. Jul-Sep.
● Alpine meadows in thickets, lakesides, wet grasslands; 3400-4600 m. Gansu, Qinghai, Shaanxi, W Sichuan, E Xizang, NW Yunnan.
（责任编辑：徐晔春）
学名（Scientific Name）：Carex kansuensis Nelmes
英文名（English Common Name）：
别名（Chinese Common Name）：甘肃苔草
异名（Synonym）：
科属（Family & Genus）：莎草科（Cyperaceae）薹草属
形态特征（Description）：根状茎短。秆丛生，高45-100厘米，锐三棱形，坚硬，基部具紫红色、无叶片的叶鞘。叶短于秆，宽5-7毫米，平张，边缘粗糙。苞片最下部的短叶状，边缘粗糙，上部的刚毛状，无鞘，短于花序。小穗4-6个，接近，顶生1个雌雄顺序；其余的雌性，在雌小穗基部有时具少数雄花，花密生，长圆状圆柱形，长1.5-3.5厘米；小穗柄纤细，下部的长约2厘米，下垂；雌花鳞片椭圆状披针形，顶端渐尖，长4-4.5毫米，暗紫色，边缘具狭的白色膜质。果囊近等长于鳞片，压扁，麦秆黄色，有时上部黄褐色或具紫红色斑点，无脉，顶端急缩成短喙，喙口具2齿。小坚果疏松地包于果囊中，长圆形或倒卵状长圆形，三棱形，长约2毫米；柱头3个。花果期7-9月。
分布（Distribution）：产陕西、甘肃、青海、四川、云南及西藏，生于海拔3400-4600米的高山灌丛草甸、湖泊岸边及湿润草地。
用途（Use）：
引自中国植物志英文版FOC Vol. 23 Page 303, 306
Carex kansuensis Nelmes, Bull. Misc. Inform. Kew. 1939: 201. 1939.
甘肃薹草 gan su tai cao| Cyperaceae | Carex
Rhizome short. Culms 45-100 cm tall, acutely trigonous, firm, clothed at base with purple bladeless sheaths. Leaves shorter than culm, blades broadly linear, 5-7 mm wide, flat, margins scabrous. Involucral bracts sheathless, lowest bracts shortly bladed, shorter than inflorescence, scabrous on margins, upper ones setaceous. Spikes 4-6, approximate; terminal spike gynaecandrous; lateral spikes female with a few male flowers at base, densely many flowered, oblong-cylindric, 1.5-3.5 cm; lowest peduncle (ca. 2 mm) slender, pendulous. Female glumes dark purple, elliptic-lanceolate, 4-4.5 mm, margins narrowly white hyaline, apex acuminate. Utricles stramineous, subequaling glume, compressed, sometimes upper yellow-brown or purple punctate, nerveless, apex abruptly contracted into a short beak, orifice 2-toothed. Nutlets loosely enveloped, oblong or obovate-oblong, trigonous, ca. 2 mm; stigmas 3. Fl. and fr. Jul-Sep.
● Alpine meadows in thickets, lakesides, wet grasslands; 3400-4600 m. Gansu, Qinghai, Shaanxi, W Sichuan, E Xizang, NW Yunnan.
（责任编辑：徐晔春）
踩一下[0]
顶一下[1]