黄花水龙 Ludwigia peploides subsp. stipulacea
中文名（Chinese Name）：黄花水龙
学名（Scientific Name）：Ludwigia peploides subsp. stipulacea (Ohwi) Raven
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Jussiaea repens , L. Ludwigia adscendens var. stipulacea (Ohwi) Hara Jussiaea stipulacea Ohwi Ludwigia stipulacea (Ohwi) Ohwi
科属（Family & Genus）：柳叶菜科（Onagraceae）丁香蓼属
形态特征（Description）：多年生浮水或上升草本，浮水茎节上常生圆柱状海绵状贮气根状浮器，具多数须状根；浮水茎长达3米，直立茎高达60厘米，无毛。叶长圆形或倒卵状长圆形，长3-9厘米，宽1-2.5厘米，先端常锐尖或渐尖，基部狭楔形，侧脉7-11对；叶柄长3-20毫米；托叶明显，卵形或鳞片状，长2-4毫米。花单生于上部叶腋；小苞片常生于子房近中部，三角形，长约1毫米；萼片5，三角形，长6-12毫米，宽1.5-2.5毫米，多少被毛；花瓣鲜金黄色，基部常有深色斑点，倒卵形，长7-13毫米，宽5-10毫米，先端钝圆或微凹，基部宽楔形；雄蕊10，花丝鲜黄色，对花瓣的稍短，长2-5毫米；花药淡黄色，卵状长圆形，长1-1.5毫米，花粉粒以单体授粉；花盘稍隆起，基部有蜜腺，并围有白毛；花柱黄色，长2.5-5毫米，密被长毛；柱头黄色，扁球状，5深裂，花时常稍高出雄蕊，上部2/3接受花粉，蒴果具10条纵棱，长1-2.5厘米；果梗长2-6厘米。种子每室单列纵向排列，嵌入木质硬内果皮内，椭圆状，长1-1.2毫米。花期6-8月，果期8-10月。
分布（Distribution）：产浙江、福建与广东东部，生于50-200米运河、池塘、水田湿地。日本也有。
用途（Use）：
引自中国植物志英文版：FOC Vol. 13 Page 403
Ludwigia peploides (Kunth) P. H. Raven subsp. stipulacea (Ohwi) P. H. Raven, Reinwardtia. 6: 397. 1963.
黄花水龙 huang hua shui long| Onagraceae | Ludwigia
Jussiaea stipulacea Ohwi, J. Jap. Bot. 26: 232. 1951; Ludwigia adscendens (Linnaeus) H. Hara var. stipulacea (Ohwi) H. Hara; L. stipulacea (Ohwi) Ohwi.
Herbs perennial, sprawling and rooting at nodes or floating, pneumatophores usually absent on floating stems but sometimes present on stems under water. Floating stems to 300 cm, terrestrial stems 10-60 cm, branched, ascending, glabrous. Petiole 2-35 mm; leaf blade oblong, 2.5-10 × 1-3.2 cm, lateral veins 7-11 per side, submarginal vein not prominent, base narrowly cuneate, apex acute or acuminate. Sepals 5, deltoid-acuminate, 6-12 mm, glabrous or villous. Petals bright golden-yellow with a darker spot at base, obovate, 9-17 × 5-11 mm. Stamens 10; filaments bright yellow, 2.5-5 mm; anthers pale yellow, 1-1.8 mm; pollen in monads. Style yellow, 2.5-5 mm, lower half densely long hairy; stigma depressed-globose, deeply 5-lobed. Capsule light brown, cylindric, somewhat 5-angled, abruptly narrowed at base, scarcely narrowed at apex, 1.2-4 cm, 2-5 mm in diam., glabrous, thickly walled, tardily and irregularly dehiscent; pedicels 2-6.5 cm. Seeds in one row per locule, firmly embedded in coherent cubes of woody endocarp fused to capsule wall, pale brown, 1.1-1.3 mm, raphe inconspicuous. Fl. May-Oct, fr. Jul-Nov. 2n = 16*.
Wet swampy areas, especially along rivers, ditches, and lakes, often in disturbed and/or cultivated areas; near sea level to 300 m. Anhui, Fujian, Guangdong, Zhejiang [Japan].
Ludwigia peploides subsp. peploides is native to the S United States through W and C South America to Argentina, and is intro duced on some Pacific islands. Ludwigia peploides subsp. montevidensis (Sprengel) P. H. Raven is native to S Brazil, Uruguay, Argentina, and Chile, and is introduced in the United States (California), as well as in France, Australia, and New Zealand.
（责任编辑：徐晔春）
学名（Scientific Name）：Ludwigia peploides subsp. stipulacea (Ohwi) Raven
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Jussiaea repens , L. Ludwigia adscendens var. stipulacea (Ohwi) Hara Jussiaea stipulacea Ohwi Ludwigia stipulacea (Ohwi) Ohwi
科属（Family & Genus）：柳叶菜科（Onagraceae）丁香蓼属
形态特征（Description）：多年生浮水或上升草本，浮水茎节上常生圆柱状海绵状贮气根状浮器，具多数须状根；浮水茎长达3米，直立茎高达60厘米，无毛。叶长圆形或倒卵状长圆形，长3-9厘米，宽1-2.5厘米，先端常锐尖或渐尖，基部狭楔形，侧脉7-11对；叶柄长3-20毫米；托叶明显，卵形或鳞片状，长2-4毫米。花单生于上部叶腋；小苞片常生于子房近中部，三角形，长约1毫米；萼片5，三角形，长6-12毫米，宽1.5-2.5毫米，多少被毛；花瓣鲜金黄色，基部常有深色斑点，倒卵形，长7-13毫米，宽5-10毫米，先端钝圆或微凹，基部宽楔形；雄蕊10，花丝鲜黄色，对花瓣的稍短，长2-5毫米；花药淡黄色，卵状长圆形，长1-1.5毫米，花粉粒以单体授粉；花盘稍隆起，基部有蜜腺，并围有白毛；花柱黄色，长2.5-5毫米，密被长毛；柱头黄色，扁球状，5深裂，花时常稍高出雄蕊，上部2/3接受花粉，蒴果具10条纵棱，长1-2.5厘米；果梗长2-6厘米。种子每室单列纵向排列，嵌入木质硬内果皮内，椭圆状，长1-1.2毫米。花期6-8月，果期8-10月。
分布（Distribution）：产浙江、福建与广东东部，生于50-200米运河、池塘、水田湿地。日本也有。
用途（Use）：
引自中国植物志英文版：FOC Vol. 13 Page 403
Ludwigia peploides (Kunth) P. H. Raven subsp. stipulacea (Ohwi) P. H. Raven, Reinwardtia. 6: 397. 1963.
黄花水龙 huang hua shui long| Onagraceae | Ludwigia
Jussiaea stipulacea Ohwi, J. Jap. Bot. 26: 232. 1951; Ludwigia adscendens (Linnaeus) H. Hara var. stipulacea (Ohwi) H. Hara; L. stipulacea (Ohwi) Ohwi.
Herbs perennial, sprawling and rooting at nodes or floating, pneumatophores usually absent on floating stems but sometimes present on stems under water. Floating stems to 300 cm, terrestrial stems 10-60 cm, branched, ascending, glabrous. Petiole 2-35 mm; leaf blade oblong, 2.5-10 × 1-3.2 cm, lateral veins 7-11 per side, submarginal vein not prominent, base narrowly cuneate, apex acute or acuminate. Sepals 5, deltoid-acuminate, 6-12 mm, glabrous or villous. Petals bright golden-yellow with a darker spot at base, obovate, 9-17 × 5-11 mm. Stamens 10; filaments bright yellow, 2.5-5 mm; anthers pale yellow, 1-1.8 mm; pollen in monads. Style yellow, 2.5-5 mm, lower half densely long hairy; stigma depressed-globose, deeply 5-lobed. Capsule light brown, cylindric, somewhat 5-angled, abruptly narrowed at base, scarcely narrowed at apex, 1.2-4 cm, 2-5 mm in diam., glabrous, thickly walled, tardily and irregularly dehiscent; pedicels 2-6.5 cm. Seeds in one row per locule, firmly embedded in coherent cubes of woody endocarp fused to capsule wall, pale brown, 1.1-1.3 mm, raphe inconspicuous. Fl. May-Oct, fr. Jul-Nov. 2n = 16*.
Wet swampy areas, especially along rivers, ditches, and lakes, often in disturbed and/or cultivated areas; near sea level to 300 m. Anhui, Fujian, Guangdong, Zhejiang [Japan].
Ludwigia peploides subsp. peploides is native to the S United States through W and C South America to Argentina, and is intro duced on some Pacific islands. Ludwigia peploides subsp. montevidensis (Sprengel) P. H. Raven is native to S Brazil, Uruguay, Argentina, and Chile, and is introduced in the United States (California), as well as in France, Australia, and New Zealand.
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