少花荸荠Heleocharis pauciflora (Lightf.) Link
少花荸荠Heleocharis pauciflora (Lightf.) Link
8.少花荸荠 图版XX，1-6
Heleocharis pauciflora (Lightf.) Link, Hort. Berol. I (1827) 284; Reichb. Ic. Fl. Germ. VIII (1846) t. 299, f. 707, 708; Svens. in Rhodora XXXI (1929) 171, t. 189, f. 23.
具细的匍匐根状茎，直径1毫米。稈多数，密丛生，钝五稜柱状，劲直，细，灰绿色，高3-30厘米，直径0.5毫米。叶缺如，只在稈的基部有1-2叶鞘；鞘红褐色或褐色，膜质，管状，高1-4厘米，鞘口平。小穗卵形或球形，长4-7毫米，淡褐色，顶端急尖，有2-7朵花，在小穗基部的一片鳞片淡褐色，不育，顶端钝或急尖，抱小穗基部一周，长为小穗一半或接近小穗全长，其余鳞片全有花，卵状披针形，顶端急尖，长4.5毫米，宽1.7毫米，背面栗褐色，具宽或狭的干膜质的边缘；下位刚毛0-5条，长短不一，趋向于减退，一般长为小坚果的一半，少有过之者，有倒刺；柱头3。小坚果倒卵形，平凸状，长2毫米，灰色微黄，平滑，表面细胞呈四至六角形；花柱基细，不膨大，形成一个小三稜形短尖，短尖长为小坚果1/5-1/4。花果期6-7月。
产于新疆。分布于欧、亚、美洲很北地区直至北极。
《Flora of China》 Vol. 23 (2010)
Eleocharis quinqueflora (Hartmann) O. Schwarz Mitt. Thüring. Bot. Ges. 1: 89. 1949.
少花荸荠 shao hua bi qi
Scirpus quinqueflorus Hartmann, Prim. Lin. Inst. Bot., ed. 2, 85. 1767; Eleocharis meridionalis G. Zinserling; E. pauciflora (Lightfoot) Link; S. pauciflorus Lightfoot.
Perennials. Stolons ca. 1 mm thick. Culms erect, wavy, or rarely recurved, grayish green, tufted, 3-30 cm tall, ca. 0.5 mm thick, obtusely 5-angled. Leaf sheaths 1 or 2, reddish brown to brown, tubular, 1-4 cm, mouth truncate. Spikelet brownish, ovoid to globose, 4-7 mm, 2-7-flowered. Basalmost glume empty, ca. 1/2 as long to as long as spikelet, amplexicaul for whole spikelet base; fertile glumes brown to dark reddish brown, ovate-lanceolate, ca. 4.5 × 1.7 mm, margin broadly to narrowly hyaline, apex acute. Perianth bristles 0-6, of different lengths, usually ca. 1/2 as long as nutlet or rarely slightly longer, retrorsely spinulose. Stigmas 3. Nutlet yellowish gray, obovoid, 1.9-2.5 × ca. 1 mm, plano-convex, appearing smooth but finely cellular reticulate, apex not constricted; persistent style base not inflated, subconic to 3-angled-subulate, 1/5-1/4 as long as nutlet. Fl. and fr. Jun-Jul.
River and lake margins, marshy areas; 800-4700 m. Gansu, Nei Mongol, Shanxi, Xinjiang, Xizang [Afghanistan, NW India, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Uzbekistan; N Africa, SW Asia, Europe, North and South America].
科名：莎草科 Cyperaceae
属名：荸荠属 Heleocharis
8.少花荸荠 图版XX，1-6
Heleocharis pauciflora (Lightf.) Link, Hort. Berol. I (1827) 284; Reichb. Ic. Fl. Germ. VIII (1846) t. 299, f. 707, 708; Svens. in Rhodora XXXI (1929) 171, t. 189, f. 23.
具细的匍匐根状茎，直径1毫米。稈多数，密丛生，钝五稜柱状，劲直，细，灰绿色，高3-30厘米，直径0.5毫米。叶缺如，只在稈的基部有1-2叶鞘；鞘红褐色或褐色，膜质，管状，高1-4厘米，鞘口平。小穗卵形或球形，长4-7毫米，淡褐色，顶端急尖，有2-7朵花，在小穗基部的一片鳞片淡褐色，不育，顶端钝或急尖，抱小穗基部一周，长为小穗一半或接近小穗全长，其余鳞片全有花，卵状披针形，顶端急尖，长4.5毫米，宽1.7毫米，背面栗褐色，具宽或狭的干膜质的边缘；下位刚毛0-5条，长短不一，趋向于减退，一般长为小坚果的一半，少有过之者，有倒刺；柱头3。小坚果倒卵形，平凸状，长2毫米，灰色微黄，平滑，表面细胞呈四至六角形；花柱基细，不膨大，形成一个小三稜形短尖，短尖长为小坚果1/5-1/4。花果期6-7月。
产于新疆。分布于欧、亚、美洲很北地区直至北极。
《Flora of China》 Vol. 23 (2010)
Eleocharis quinqueflora (Hartmann) O. Schwarz Mitt. Thüring. Bot. Ges. 1: 89. 1949.
少花荸荠 shao hua bi qi
Scirpus quinqueflorus Hartmann, Prim. Lin. Inst. Bot., ed. 2, 85. 1767; Eleocharis meridionalis G. Zinserling; E. pauciflora (Lightfoot) Link; S. pauciflorus Lightfoot.
Perennials. Stolons ca. 1 mm thick. Culms erect, wavy, or rarely recurved, grayish green, tufted, 3-30 cm tall, ca. 0.5 mm thick, obtusely 5-angled. Leaf sheaths 1 or 2, reddish brown to brown, tubular, 1-4 cm, mouth truncate. Spikelet brownish, ovoid to globose, 4-7 mm, 2-7-flowered. Basalmost glume empty, ca. 1/2 as long to as long as spikelet, amplexicaul for whole spikelet base; fertile glumes brown to dark reddish brown, ovate-lanceolate, ca. 4.5 × 1.7 mm, margin broadly to narrowly hyaline, apex acute. Perianth bristles 0-6, of different lengths, usually ca. 1/2 as long as nutlet or rarely slightly longer, retrorsely spinulose. Stigmas 3. Nutlet yellowish gray, obovoid, 1.9-2.5 × ca. 1 mm, plano-convex, appearing smooth but finely cellular reticulate, apex not constricted; persistent style base not inflated, subconic to 3-angled-subulate, 1/5-1/4 as long as nutlet. Fl. and fr. Jun-Jul.
River and lake margins, marshy areas; 800-4700 m. Gansu, Nei Mongol, Shanxi, Xinjiang, Xizang [Afghanistan, NW India, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Uzbekistan; N Africa, SW Asia, Europe, North and South America].