裂叶天胡荽Hydrocotyle dielsiana Wolff
裂叶天胡荽Hydrocotyle dielsiana Wolff
4．裂叶天胡荽（植物分类学报）图版3
Hydrocotyle dielsiana Wolff in Fedde Repent. sp. Nov. 27: 112. 1929.
细弱草本。茎直立或基部匍匐，高15-30厘米，不分枝或有极短而不超出6厘米长的侧枝，下部疏被柔毛或无毛，上部密被白色柔毛，节上生根。叶片长2-4厘米，宽4-8厘米，掌状5-7深裂，裂口近基部，中间裂片菱形、倒卵形至倒卵状披针形，长1.5-3厘米；两侧裂片短于中间裂片，裂片下部全缘，楔形，中部较阔，上部边缘有5-6个锯齿，齿直立或稍弯曲，两面疏被短的粗伏毛；叶脉7条，自基部射出，紫黑色；叶柄长2.5-7厘米；托叶膜质，全缘或有2裂。花序梗丝状，单生于茎的顶端，与叶对生或近腋生，长于叶柄，密生白色柔毛；小伞形花序有花20-35，花较疏生；小总苞片长1-1.2毫米，膜质；花瓣白色，长卵形，长约1.2毫米，宽0.7毫米，有1条不明显的脉；花丝长1.8-2.1毫米，花药卵圆形；花柱长0.7-11毫米，果熟时向外反曲。果实近心状圆形，幼时淡紫色，成熟时棕色或棕褐色，长约1.3毫米，宽约2.1毫米，光滑，背棱及中棱明显凸起，合生面紧缩；果柄长3-5毫米。花果期7月。
产湖北巴东。生长在山坡路旁阴湿地；海拔1200米。模式标本采自湖北西部。
《Flora of China》 Vol. 14 (2005)
Hydrocotyle dielsiana H. Wolff
裂叶天胡荽 lie ye tian hu sui
Stem slender, decumbent, 15–30 cm, sparingly branched, branches less than 6 cm, proximally sparingly pubescent or glabrous, distally densely white pubescent. Petiole 2.5–7 cm; leaf blade cordate-rounded, 2–4 × 4–8 cm, palmately 5–7-divided, usually parted to near base; segments rhombic, ovate or obovate-lanceolate, sparsely appressed-hispid on both surfaces, dark purple, base cuneate, irregularly dentate or 3-lobed towards apex, apex acute or acuminate. Umbels 20–35-flowered; peduncles filiform, longer than petioles, densely white pubescent; bracts 1–1.2 mm, membranous. Petals white. Styles 0.7–11 mm, reflexed. Fruit pale purple when young, deep brown when mature, broadly cordate-globose, ca. 1.3 × 2.1 mm, glabrous. Fl. and fr. Jun–Jul.
Wet places on mountain slopes, roadsides; ca. 1200 m. W Hubei (Badong), Sichuan.
别名：裂叶三胡荽;
科名：伞形科 Umbelliferae
属名：天胡荽属 Hydrocotyle
4．裂叶天胡荽（植物分类学报）图版3
Hydrocotyle dielsiana Wolff in Fedde Repent. sp. Nov. 27: 112. 1929.
细弱草本。茎直立或基部匍匐，高15-30厘米，不分枝或有极短而不超出6厘米长的侧枝，下部疏被柔毛或无毛，上部密被白色柔毛，节上生根。叶片长2-4厘米，宽4-8厘米，掌状5-7深裂，裂口近基部，中间裂片菱形、倒卵形至倒卵状披针形，长1.5-3厘米；两侧裂片短于中间裂片，裂片下部全缘，楔形，中部较阔，上部边缘有5-6个锯齿，齿直立或稍弯曲，两面疏被短的粗伏毛；叶脉7条，自基部射出，紫黑色；叶柄长2.5-7厘米；托叶膜质，全缘或有2裂。花序梗丝状，单生于茎的顶端，与叶对生或近腋生，长于叶柄，密生白色柔毛；小伞形花序有花20-35，花较疏生；小总苞片长1-1.2毫米，膜质；花瓣白色，长卵形，长约1.2毫米，宽0.7毫米，有1条不明显的脉；花丝长1.8-2.1毫米，花药卵圆形；花柱长0.7-11毫米，果熟时向外反曲。果实近心状圆形，幼时淡紫色，成熟时棕色或棕褐色，长约1.3毫米，宽约2.1毫米，光滑，背棱及中棱明显凸起，合生面紧缩；果柄长3-5毫米。花果期7月。
产湖北巴东。生长在山坡路旁阴湿地；海拔1200米。模式标本采自湖北西部。
《Flora of China》 Vol. 14 (2005)
Hydrocotyle dielsiana H. Wolff
裂叶天胡荽 lie ye tian hu sui
Stem slender, decumbent, 15–30 cm, sparingly branched, branches less than 6 cm, proximally sparingly pubescent or glabrous, distally densely white pubescent. Petiole 2.5–7 cm; leaf blade cordate-rounded, 2–4 × 4–8 cm, palmately 5–7-divided, usually parted to near base; segments rhombic, ovate or obovate-lanceolate, sparsely appressed-hispid on both surfaces, dark purple, base cuneate, irregularly dentate or 3-lobed towards apex, apex acute or acuminate. Umbels 20–35-flowered; peduncles filiform, longer than petioles, densely white pubescent; bracts 1–1.2 mm, membranous. Petals white. Styles 0.7–11 mm, reflexed. Fruit pale purple when young, deep brown when mature, broadly cordate-globose, ca. 1.3 × 2.1 mm, glabrous. Fl. and fr. Jun–Jul.
Wet places on mountain slopes, roadsides; ca. 1200 m. W Hubei (Badong), Sichuan.