卵叶丁香蓼Ludwigia ovalis

中文名(Chinese Name):卵叶丁香蓼
学名(Scientific Name):Ludwigia ovalis Miq.
英文名(English Common Name):
别名(Chinese Common Name):卵叶水丁香
异名(Synonym):Ludwigia palustris var. ovalis (Miq.) H.Lév. 
科属(Family & Genus):柳叶菜科(Onagraceae)丁香蓼属
形态特征(Description):多年生匍匐草本,近无毛,节上生根;茎长达50厘米,茎枝顶端上升。叶卵形至椭圆形,长1-2.2厘米,宽0.5-1.5厘米,先端锐尖,基部骤狭成具翅的柄,侧脉4-7对,无毛;叶柄长2-7毫米。花单生于茎枝上部叶腋,几乎无梗;小苞片2,生花基部;卵状长圆形,长约1.8毫米,宽约0.4毫米;萼片4,卵状三角形,长2-3毫米,宽1-2毫米,先端锐尖,边缘有微毛;花瓣不存在;雄蕊4;花丝长0.5-0.8毫米;花药淡黄色,近基着生,近球形,长0.6-0.9毫米,花粉粒以单体授粉;花盘隆起,绿色,深4裂,无毛,裂片对瓣;花柱绿色,长0.6-1毫米,无毛;柱头绿色,头状,径0.3-0.5毫米。蒴果近长圆形,具4棱,长3-5毫米,径2.5-4毫米,被微毛,果皮木栓质,但易于不规则室背开裂;果梗很短。种子每室多列,游离生,淡褐色至红褐色,椭圆状,长0.7-0.9毫米,径0.4-0.5毫米,两端稍尖,一侧与内果皮连接,种脊明显,平坦,表面有纵横条纹。花期7-8月,果期8-9月。染色体数2n=32。
分布(Distribution):产安徽、江苏、浙江、江西、湖南、福建、台湾等省,生于海拔40-200米塘湖边、田边、沟边、草坡、沼泽湿润处。日本也有。
用途(Use):
引自中国植物志英文版:FOC Vol. 13 Page 401, 404   
Ludwigia ovalis Miquel, Ann. Mus. Bot. Lugduno-Batavi. 3: 95. 1867.
卵叶丁香蓼 luan ye ding xiang liao| Onagraceae  | Ludwigia
Ludwigia palustris (Linnaeus) Elliott var. ovalis (Miquel) H. Léveillé.
Herbs delicate, perennial, creeping and rooting at nodes. Stems ascending, 20-45 cm tall, branched basally, subglabrous or finely puberulous. Petiole winged, to 7 mm; leaf blade ovate, 0.5-2.5 × 0.4-2 cm, glabrous, lateral veins 4-7 per side, submarginal vein absent, base abruptly attenuate, apex acute. Se- pals 4, deltoid-acute, 1-3 mm, very finely puberulous along margin. Petals absent. Stamens 4; filaments translucent, 0.5-0.8 mm, dilated below; anthers 0.6-0.9 mm, nearly basifixed; pollen in monads. Style green, 0.6-1 mm; stigma dark green, globose. Capsules elongate-globose, subterete, 3-5 mm, 2.5-3.5 mm in diam., finely puberulous, thinly walled, readily and irregularly loculicidal; subsessile or pedicel to 6 mm. Seeds in 2 or more rows per locule, free, reddish brown, apiculate, 0.7-0.9 mm, raphe inflated and triangular, 0.2-0.5 mm across, coarsely reticulate. Fl. Jul-Sep, fr. Jul-Oct. 2n = 32.
Moist places, especially on beds of lakes and ponds; 100-500 m. Anhui, Hunan, Fujian, Guangdong, Jiangsu, Taiwan, Zhejiang [Japan, Korea].
卵叶丁香蓼Ludwigia ovalis

卵叶丁香蓼Ludwigia ovalis

卵叶丁香蓼Ludwigia ovalis(责任编辑:徐晔春)

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