羽毛荸荠Heleocharis wichurai Bocklr.
羽毛荸荠Heleocharis wichurai Bocklr.
12.羽毛荸荠 图版XX，17-19
Heleocharis wichurai Bocklr. in Linnaea XXXVI (1870) 448; Kitagawa, Lineam. Fl. Mansh. (1939) 121 ——Eleocharis tetraquetra Kom. , Fl. Mansh. I in Act. Hort. Petrop. XX (1901) 351, non Nees; C. B. Clarke in Journ. Linn. Soc. Bot.XXXVI (1903) 228, pro parte ——Scirpus petasatus Maxim. in Bull. Soc. Nat. Mosc. LIX 1 (1879) 64 ——Heleocharis petasata (Maxim.) Zinserl. in Kom. Fl. USSR. III (1935) 589.
一般无匍匐根状茎，但有时具短的匍匐根状茎。稈少数，丛生，高30-50厘米，锐四稜柱状，细弱，光滑，无毛，灰绿色，在稈的基部有1-2个叶鞘；鞘带红色或紫红色，顶端向一面深裂因而鞘口很斜。小穗卵形、长圆形或披针形，顶端急尖，稍斜生，长8-12毫米，直径3-5毫米，初近褐色。后期苍白色，有多数花。在小穗基部的2片鳞片中空无花，对生，最下的一片抱小穗基部几一周，其余鳞片紧密地螺旋状排列，全有花，长圆形或椭圆形，顶端钝圆，长3毫米，宽近2毫米，膜质，舟状，背部淡绿色，中脉一条细而不明显，两侧有带锈色条纹，边缘为宽干膜质；下位刚毛6条，或多或少与小坚果（连花柱基在内）等长，锈褐色，密生疏柔毛，毛白色，倒向或平展，软弱，羽毛状或近似鸡毛掸；柱头3。小坚果倒卵形或宽倒卵形，微扁，钝三稜形，腹面微凸，背面十分隆起，长（不连花柱基）1.3-1.5毫米，宽1-1.1毫米，淡橄榄色，后期淡褐色；花柱基异常膨大，圆锥形至长圆形，顶端急尖或钝，有时截形，扁，白色，密布乳头状突起，长为小坚果的3/5-2/3，宽为小坚果1/2-2/3（-4/5）。花果期7月。
产于甘肃、河北、山东、浙江、东北等省；生于水边草丛中，海拔1680米。此外，分布于朝鲜、苏联远东地区和日本。
《Flora of China》 Vol. 23 (2010)
Eleocharis wichurae Boeckeler Linnaea. 36: 448. 1870.
羽毛荸荠 yu mao bi qi
Eleocharis petasata (Maximowicz) G. Zinserling; Scirpus petasatus Maximowicz.
Perennials. Stolons short or absent. Culms grayish green, tufted, 30-60 cm tall, slender, sharply 4-angled, smooth. Leaf sheaths 1 or 2, reddish to purplish, mouth very obliquely truncate. Spikelet brownish at first but becoming pale green, ovoid, narrowly ovoid, or oblong, 8-15 × 3-5 mm, slightly oblique, many flowered, apex acute. Basal 2 glumes empty; basalmost glume amplexicaul for whole spikelet base; fertile glumes pale green medially and rust-colored striate on both sides, tightly spirally imbricate, oblong to elliptic and boat-shaped, 4-6 × 2-2.5 mm, membranous, midvein thin and obscure, margin broadly hyaline, apex obtuse-rounded. Perianth bristles 6, rust-colored, as long as nutlet (including style base), plumose with spreading hairs. Stigmas 3. Nutlet pale olivaceous, turning brownish when mature, shortly stipitate, obovoid to broadly obovoid, ca. 1.5 × 2 mm, obtusely 3-sided, slightly compressed, both surfaces smooth, apex not constricted; persistent style base very inflated, narrowly ovoid, as long and as wide as nutlet or nearly so, laterally compressed, densely mammillate, apex acute to obtuse. Fl. and fr. Jul-Sep.
Shallow water in valleys, grasslands by water, marshy areas; 900-1700 m. Anhui, SE Gansu, W Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, NE Nei Mongol, S Shaanxi, Shandong, Zhejiang [Japan, Korea, Russia (Far East, Siberia)].
科名：莎草科 Cyperaceae
属名：荸荠属 Heleocharis
12.羽毛荸荠 图版XX，17-19
Heleocharis wichurai Bocklr. in Linnaea XXXVI (1870) 448; Kitagawa, Lineam. Fl. Mansh. (1939) 121 ——Eleocharis tetraquetra Kom. , Fl. Mansh. I in Act. Hort. Petrop. XX (1901) 351, non Nees; C. B. Clarke in Journ. Linn. Soc. Bot.XXXVI (1903) 228, pro parte ——Scirpus petasatus Maxim. in Bull. Soc. Nat. Mosc. LIX 1 (1879) 64 ——Heleocharis petasata (Maxim.) Zinserl. in Kom. Fl. USSR. III (1935) 589.
一般无匍匐根状茎，但有时具短的匍匐根状茎。稈少数，丛生，高30-50厘米，锐四稜柱状，细弱，光滑，无毛，灰绿色，在稈的基部有1-2个叶鞘；鞘带红色或紫红色，顶端向一面深裂因而鞘口很斜。小穗卵形、长圆形或披针形，顶端急尖，稍斜生，长8-12毫米，直径3-5毫米，初近褐色。后期苍白色，有多数花。在小穗基部的2片鳞片中空无花，对生，最下的一片抱小穗基部几一周，其余鳞片紧密地螺旋状排列，全有花，长圆形或椭圆形，顶端钝圆，长3毫米，宽近2毫米，膜质，舟状，背部淡绿色，中脉一条细而不明显，两侧有带锈色条纹，边缘为宽干膜质；下位刚毛6条，或多或少与小坚果（连花柱基在内）等长，锈褐色，密生疏柔毛，毛白色，倒向或平展，软弱，羽毛状或近似鸡毛掸；柱头3。小坚果倒卵形或宽倒卵形，微扁，钝三稜形，腹面微凸，背面十分隆起，长（不连花柱基）1.3-1.5毫米，宽1-1.1毫米，淡橄榄色，后期淡褐色；花柱基异常膨大，圆锥形至长圆形，顶端急尖或钝，有时截形，扁，白色，密布乳头状突起，长为小坚果的3/5-2/3，宽为小坚果1/2-2/3（-4/5）。花果期7月。
产于甘肃、河北、山东、浙江、东北等省；生于水边草丛中，海拔1680米。此外，分布于朝鲜、苏联远东地区和日本。
《Flora of China》 Vol. 23 (2010)
Eleocharis wichurae Boeckeler Linnaea. 36: 448. 1870.
羽毛荸荠 yu mao bi qi
Eleocharis petasata (Maximowicz) G. Zinserling; Scirpus petasatus Maximowicz.
Perennials. Stolons short or absent. Culms grayish green, tufted, 30-60 cm tall, slender, sharply 4-angled, smooth. Leaf sheaths 1 or 2, reddish to purplish, mouth very obliquely truncate. Spikelet brownish at first but becoming pale green, ovoid, narrowly ovoid, or oblong, 8-15 × 3-5 mm, slightly oblique, many flowered, apex acute. Basal 2 glumes empty; basalmost glume amplexicaul for whole spikelet base; fertile glumes pale green medially and rust-colored striate on both sides, tightly spirally imbricate, oblong to elliptic and boat-shaped, 4-6 × 2-2.5 mm, membranous, midvein thin and obscure, margin broadly hyaline, apex obtuse-rounded. Perianth bristles 6, rust-colored, as long as nutlet (including style base), plumose with spreading hairs. Stigmas 3. Nutlet pale olivaceous, turning brownish when mature, shortly stipitate, obovoid to broadly obovoid, ca. 1.5 × 2 mm, obtusely 3-sided, slightly compressed, both surfaces smooth, apex not constricted; persistent style base very inflated, narrowly ovoid, as long and as wide as nutlet or nearly so, laterally compressed, densely mammillate, apex acute to obtuse. Fl. and fr. Jul-Sep.
Shallow water in valleys, grasslands by water, marshy areas; 900-1700 m. Anhui, SE Gansu, W Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, NE Nei Mongol, S Shaanxi, Shandong, Zhejiang [Japan, Korea, Russia (Far East, Siberia)].