日本浮萍檢視原始碼討論檢視歷史

日本浮萍

原圖鏈接 來自植物標本館

中文學名:日本浮萍 拉丁學名:Lemna japonica Landolt 界:植物界 分布區域:中國

日本浮萍(rì běn fú píng，學名 Lemna japonica Landolt，異名：Lemna leiboensis)，禾本科，一年生浮水小草本，生長在手中。分布於中國大部分地區。

日本浮萍基本信息

種中文名：日本浮萍

種拉丁名：Lemna japonica Landolt

原圖鏈接 來自植物標本館

屬中文名：浮萍屬

原圖鏈接 來自植物標本館

科中文名：浮萍科 　　科拉丁名：Lemnaceae

日本浮萍形態特徵

一年生浮水小草本。

Lemna leiboensis M. G. Liu & C. H. You.

Fronds free floating on water surface, 1-8 coherent in one group, without green stalk at base (but with a thin white stipe connecting fronds), shiny green, sometimes reddish or red on lower surface (always deeper red on lower surface than on upper), obovate to elliptic, 2-6(-7) mm, 1.3-1.8 × as long as wide, flat or slightly gibbous on lower surface, with mostly distinct papillae on upper surface near apex and above node and indistinct ones along midline, margin entire, base rounded;

veins 3(-5), nearly reaching apex, greatest distance between lateral veins near or proximal to middle, lateral veins outcurved medially. Root 0.5-15(-18) cm, sheath not winged, apex rounded (to pointed).

Turions absent. Ovary with 1 ovule; utricular scale with narrow opening at apex. Fruit not known. Fl. (very rare) Jul-Oct. 2n = 40*, 50, 63.

生境產地

Lakesides, pools, ponds, ditches; in regions with moderately temperate to warm-temperate climate; sea level to 2900 m. Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Nei Mongol, Shaanxi, Shandong, Shanxi, S Sichuan, Yunnan, Zhejiang [Japan, Korea].

Lemna japonica may have originated from hybridization between L. minor and L. turionifera.Lemna japonica may have originated from hybridization between L. minor and L. turionifera.

日本浮萍生長習性

生 境：水中

是否栽培：野生

日本浮萍地理分布

湖北分布：神農架

國內分布：湖北

國外分布：日本