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穿叶眼子菜Potamogeton perfoliatus

时间:2013-10-30 17:05来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):穿叶眼子菜 学名( Scientific Name ): Potamogeton perfoliatus L. 英文名( English Common Name ): claspingleaf pondweed 别名( Chinese Common Name ): 抱茎眼子菜 异名( Synonym ): Potamogeton perfoliatus var.
中文名(Chinese Name):穿叶眼子菜
学名(Scientific Name):Potamogeton perfoliatus L.
英文名(English Common Name):claspingleaf pondweed
别名(Chinese Common Name):抱茎眼子菜
异名(Synonym):Potamogeton perfoliatus var. mandshuriensis A. Benn.  Potamogeton amplexicaulis Kar.  Potamogeton bupleuroides Fern.  Potamogeton perfoliatus var. bupleuroides (Fern.) Farw.  Buccaferrea amplexicaulis (Kar.) Bubani  Peltopsis perfoliata (L.) Raf.  Potamogeton loeselii Honck.  Potamogeton perfoliatus var. lacustris Wallman  Potamogeton perfoliatus var. lanceolatus J.W.Robbins  Potamogeton perfoliatus var. mandschuriensis A. Benn.  Potamogeton perfoliatus var. minor F.M.Bailey  Potamogeton perfoliatus var. muelleri A.Benn.  Spirillus perfoliatus (L.) Nieuwl.
科属(Family & Genus):眼子菜科(Potamogetonaceae)眼子菜属
形态特征(Description):多年生沉水草本,具发达的根茎。根茎白色,节处生有须根。茎圆柱形,直径0.5-2.5毫米,上部多分枝。叶卵形、卵状披针形或卵状圆形,无柄,先端钝圆,基部心形,呈耳状抱茎,边缘波状,常具极细微的齿;基出3脉或5脉,弧形,顶端连接,次级脉细弱;托叶膜质,无色,长3-7毫米,早落。穗状花序顶生,具花4-7轮,密集或稍密集;花序梗与茎近等粗,长2-4厘米;花小,被片4,淡绿色或绿色;雌蕊4枚,离生。果实倒卵形,长3-5毫米,顶端具短喙,背部3脊,中脊稍锐,侧脊不明显。花果期5-10月。
分布(Distribution):产东北、华北、西北各省区及山东、河南、湖南、湖北、贵州、云南等省。生于湖泊、池塘、灌渠、河流等水体。广布欧洲、亚洲、北美、南美、非洲和大洋洲。
引自中国植物志英文版:FOC Vol. 23 Page 109, 112
Potamogeton perfoliatus Linnaeus, Sp. Pl. 1: 126. 1753.
穿叶眼子菜 chuan ye yan zi cai | Potamogetonaceae  | Potamogeton
Potamogeton perfoliatus var. mandschuriensis A. Bennett.
Plants perennial, submerged in fresh water. Rhizome unspotted, terete, slender. Stems terete, 0.5-2.5 mm in diam., densely branched at upper part. Stipules axillary, convolute, 3-22 mm, membranous, evanescent; leaves sessile, lanceolate to broadly ovate, orbicular-ovate, or ovate-oblong, 3-5-veined, with narrow rows of lacunae bordering midvein, base cordate and amplexicaul, margin minutely denticulate, apex obtuse or rounded. Spikes usually contiguous and cylindric, with 4-7 whorls of opposite flowers; peduncles 2-11 cm. Carpels 4. Fruit obovoid, 2.5-4.5 mm, abaxial keels 3, with a slightly sharp midvein and 2 indistinct lateral keels, with a short beak at tip. Fl. and fr. May-Oct. 2n = 52.
Lakes, ponds, rivers, channels. Gansu, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jilin, Liaoning, Nei Mongol, Qinghai, Shandong, Shanxi, Xinjiang, Xizang, Yunnan [Afghanistan, India, Indonesia (Sumatra), Japan, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Pakistan, Russia, Tajikistan, Uzbekistan; Africa, SW Asia, Australia, Central and North America, Europe].
 


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