双荚黄槐Senna bicapsularis
中文名（Chinese Name）：双荚黄槐
学名（Scientific Name）： Senna bicapsularis (L.) Roxb.
英文名（English Common Name）：Christmasbush
别名（Chinese Common Name）：双荚决明
异名（Synonym）： Cassia berterii Colla Isandrina arborescens Raf. Chamaefistula inflata G.Don Cassia spiciflora (Pittier)Pittier Cassia inflata Spreng. Cassia collae G.Don Adipera spiciflora Pittier Isandrina emarginata (L.)Britton & Rose Cassia bicapsularis var. quadrijuga DC. Cassia bicapsularis var. aristata DC.
科属（Family & Genus）：云实科,Caesalpiniaceae山扁豆属
形态特征（Description）：直立灌木，多分枝，无毛。叶长7-12厘米，有小叶3-4对；叶柄长2.5-4厘米；小叶倒卵形或倒卵状长圆形，膜质，长2.5-3.5厘米，宽约1.5厘米，顶端圆钝，基部渐狭，偏斜，下面粉绿色，侧脉纤细，在近边缘处呈网结；在最下方的一对小叶间有黑褐色线形而钝头的腺体1枚。总状花序生于枝条顶端的叶腋间，常集成伞房花序状，长度约与叶相等，花鲜黄色，直径约2厘米；雄蕊10枚，7枚能育，3枚退化而无花药，能育雄蕊中有3枚特大，高出于花瓣，4枚较小，短于花瓣。荚果圆柱状，膜质，直或微曲，长13-17厘米，直径1.6厘米，缝线狭窄；种子二列。花期10-11月；果期11月至翌年3月。
分布（Distribution）：栽培于广东、广西等省区。原产美洲热带地区，现广布于全世界热带地区。
用途（Use）：本种可作绿肥，绿篱及观赏植物。
引自植物志英文版： FOC Vol. 10 Page 29, 32
Senna bicapsularis (Linnaeus) Roxburgh, Fl. Ind., ed. 1832. 2: 342. 1832.
双荚决明 shuang jia jue ming | Fabaceae | Senna
Cassia bicapsularis Linnaeus, Sp. Pl. 1: 376. 1753.
Shrubs, erect, to 3 m tall, much branched. Crown spreading, with pendent or sometimes climbing twigs. Leaves 7-12 cm, with 3 or 4 pairs of leaflets; stipules caducous, narrowly lanceolate, subulate, 1-3 mm; petiole 2.5-4 cm, slender; rachis with a blackish brown, clavate to ovoid gland between lowest pair of leaflets; leaflets obovate or obovate-oblong, 1.5-4 × 1-2.5 cm, membranous, glabrous, base obliquely cuneate, apex obtusely rounded. Racemes lax, in axils of apical leaves, 5-15 cm, slender; bracts early caducous. Sepals yellowish to reddish brown, ovate, 5-10 mm. Petals yellow, obovate, 1.1-1.5 cm, very shortly clawed. Stamens 10, 7 fertile: 3 lower with unequal filaments 2-10 mm, anthers large, curved, ca. 1 mm; 4 short with filaments ca. 1 mm and anthers 4-5 mm; 3 staminodes with minute anthers. Ovary with glabrous stalk and style. Legume brown, terete, straight or slightly curved, 9-17 × 1-1.5 cm, tardily dehiscent, valves membranous. Seeds 50-60, olive-green, ovoid, flattened, 5-7 mm.
Cultivated in Guangdong, Guangxi, Hainan [native to tropical America; widely cultivated in the tropics].
（责任编辑：徐晔春）
学名（Scientific Name）： Senna bicapsularis (L.) Roxb.
英文名（English Common Name）：Christmasbush
别名（Chinese Common Name）：双荚决明
异名（Synonym）： Cassia berterii Colla Isandrina arborescens Raf. Chamaefistula inflata G.Don Cassia spiciflora (Pittier)Pittier Cassia inflata Spreng. Cassia collae G.Don Adipera spiciflora Pittier Isandrina emarginata (L.)Britton & Rose Cassia bicapsularis var. quadrijuga DC. Cassia bicapsularis var. aristata DC.
科属（Family & Genus）：云实科,Caesalpiniaceae山扁豆属
形态特征（Description）：直立灌木，多分枝，无毛。叶长7-12厘米，有小叶3-4对；叶柄长2.5-4厘米；小叶倒卵形或倒卵状长圆形，膜质，长2.5-3.5厘米，宽约1.5厘米，顶端圆钝，基部渐狭，偏斜，下面粉绿色，侧脉纤细，在近边缘处呈网结；在最下方的一对小叶间有黑褐色线形而钝头的腺体1枚。总状花序生于枝条顶端的叶腋间，常集成伞房花序状，长度约与叶相等，花鲜黄色，直径约2厘米；雄蕊10枚，7枚能育，3枚退化而无花药，能育雄蕊中有3枚特大，高出于花瓣，4枚较小，短于花瓣。荚果圆柱状，膜质，直或微曲，长13-17厘米，直径1.6厘米，缝线狭窄；种子二列。花期10-11月；果期11月至翌年3月。
分布（Distribution）：栽培于广东、广西等省区。原产美洲热带地区，现广布于全世界热带地区。
用途（Use）：本种可作绿肥，绿篱及观赏植物。
引自植物志英文版： FOC Vol. 10 Page 29, 32
Senna bicapsularis (Linnaeus) Roxburgh, Fl. Ind., ed. 1832. 2: 342. 1832.
双荚决明 shuang jia jue ming | Fabaceae | Senna
Cassia bicapsularis Linnaeus, Sp. Pl. 1: 376. 1753.
Shrubs, erect, to 3 m tall, much branched. Crown spreading, with pendent or sometimes climbing twigs. Leaves 7-12 cm, with 3 or 4 pairs of leaflets; stipules caducous, narrowly lanceolate, subulate, 1-3 mm; petiole 2.5-4 cm, slender; rachis with a blackish brown, clavate to ovoid gland between lowest pair of leaflets; leaflets obovate or obovate-oblong, 1.5-4 × 1-2.5 cm, membranous, glabrous, base obliquely cuneate, apex obtusely rounded. Racemes lax, in axils of apical leaves, 5-15 cm, slender; bracts early caducous. Sepals yellowish to reddish brown, ovate, 5-10 mm. Petals yellow, obovate, 1.1-1.5 cm, very shortly clawed. Stamens 10, 7 fertile: 3 lower with unequal filaments 2-10 mm, anthers large, curved, ca. 1 mm; 4 short with filaments ca. 1 mm and anthers 4-5 mm; 3 staminodes with minute anthers. Ovary with glabrous stalk and style. Legume brown, terete, straight or slightly curved, 9-17 × 1-1.5 cm, tardily dehiscent, valves membranous. Seeds 50-60, olive-green, ovoid, flattened, 5-7 mm.
Cultivated in Guangdong, Guangxi, Hainan [native to tropical America; widely cultivated in the tropics].
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