1. Papilionaceae (蝶形花科)
2. Euchresta (山豆根属)
3. Euchresta horsfieldii (伏毛山豆根)

1. FABACEAE (豆科)
2. Euchresta
3. Euchresta horsfieldii (伏毛山豆根 )

1. FABACEAE (豆科)
2. Euchresta
3. Euchresta horsfieldii (伏毛山豆根)

1. Fabaceae
2. Euchresta
3. Euchresta horsfieldii

1. Leguminosae
2. Euchresta
3. Euchresta horsfieldii

1. Fabaceae
2. Euchresta
3. Euchresta horsfieldii (伏毛山豆根)

1. Fabaceae (豆科)
2. Euchresta (山豆根属)
3. Euchresta horsfieldii (伏毛山豆根)

Andira horsfieldii Leschenault, Ann. Mus. Natl. Hist. Nat. 16: 481. 1810 ["harsfieldii"]; Euchresta strigillosa C. Y. Wu.

Shrubs, ca. 45 cm tall. Branches and branchlets glabrous, longitudinally striate. Leaves 3-5-foliolate; petiole 8-12 cm; leaflets thickly papery, abaxially densely adpressed lanuginose, adaxially glabrous, midvein slightly convex abaxially, slightly impressed adaxially, lateral veins 5 or 6 pairs, inconspicuous on both surfaces; terminal leaflet broadly elliptic or obovate-ellip-tic, 11-17.5 × 6-8 cm, base cuneate, apex cuspidate; petiolule ca. 1.3 cm; lateral leaflets nearly sessile, opposite, elliptic, 9-15 × 4.5-8 cm, base cuneate to suborbicular, apex cuspidate. Ra-cemes 13-21 cm, densely adpressed hairy; peduncle ca. 10 cm; bract inconspicuous, ca. 1 mm. Calyx broadly campanulate, 5-6 × 5-6 mm, 5-lobed at tip, obliquely nearly truncate, with very fine appressed hairs. Corolla easily deciduous, nodding, milky, ca. 1.5 cm; standard rectangular, ca. 1.1 cm × 4 mm, apex ob-tuse and retuse, base small auriculate at both sides, condupli-cate, reflexed, with stalk ca. 5 × 1 mm; wings rectangular, ca. 1 cm × 3 mm, apex obtuse, base small auriculate at both sides, upper lateral larger, stalk ca. 4 mm, less than 1 mm wide; keel obovate-oblong, apex rounded, base small auriculate on both sides, upper lateral larger, distal margins connate, ca. 1.1 cm × to 4 mm, stalk to 4 mm, less than 1 mm wide. Stamen tube ca. 1.4 cm. Ovary oblong, ca. 6 mm, attenuate at base; stipe ca. 5 mm; ovule 1; style ca. 4 mm; stigma punctiform, small. Leg-ume glossy black, ellipsoid, ca. 2 × 1.3 cm, indehiscent, stalk 6-8 mm, carpopodium ca. 1.2 cm, with 1 joint between both.

Evergreen broad-leaved forests in limestone areas; 1000-1400 m. SE Yunnan (Hekou, Maguan, Malipo), SE Xizang (Mêdog) [Bhutan, In-dia, Indonesia, Laos, Nepal, Philippines, Thailand, Vietnam].

3. 伏毛山豆根（植物分类学报）

Euchresta horsfieldii (Lesch.) J. Benn. Pl. Jav. Rar. 148. t. 31. 1838; Baker in Hook. f. Fl. Brit. Ind. 2: 248. 1878, p. p. excl. pl. Taiwan; Baker et Bakh. Fl. Jav. 1: 619. 1963; Ohashi et Sohma in Journ. Fac. Sci. Univ. Tokyo 3, 10: 218. f. 3. B. 1970; Ohashi in Hara, Fl. East. Himal. 2: 66. 1971; Chen et al. Acta Phytotax. Sin. 30 (1): 49. 1992.——Andira horsfieldii Lesch. in Ann. Mus. Paris 16: 418. t. 12. 1810; DC. Prodr. 2: 476. 1825. ——E. strigillosa C. Y. Wu in Acta Phytotax. Sin. 6: 249. f. 11. 1957; 郑万钧等, 中国树木志 2: 1422. 1985.

灌木，高约45厘米，枝及小枝无毛，有纵细纹。叶具小叶3-5枚，叶柄长8-12厘米，小叶厚纸质，上面无毛，下面密生贴伏茸毛；中脉在上面稍凹下，下面略凸起，侧脉约5-6对，两面均不明显；顶生小叶宽椭圆形或倒卵状椭圆形，长11-17.5厘米，宽6-8厘米，先端突短渐尖，基部楔形，小叶柄长1.3厘米，侧生小叶对生，椭圆形，长9-15厘米，宽4.5-8厘米，先端突短渐尖，基部楔形至近圆形，几无小叶柄。总状花序长达13-21厘米，密生细短贴伏毛，总花梗长10厘米；苞片小，长约1毫米，不显；花萼宽钟形，长宽均约5-6毫米，顶端5浅齿，斜，近于平截，有极细贴伏毛；花冠乳白色，长1.5厘米，下垂，易脱落，旗瓣瓣片长方形，长1.1厘米，宽4毫米，顶端钝圆，微凹，基部两侧有小耳，折合，向背部反曲，瓣柄长约5毫米，宽约1毫米，向上宽展，翼瓣长方形，长1厘米，宽3毫米，顶端钝圆，基部两侧各有小耳，上侧较大，瓣柄长4毫米，宽不足1毫米，斜长，龙骨瓣倒卵状长椭圆形，顶端圆，基部两侧具小耳，上侧较大，上缘粘合，瓣片长1.1厘米，宽达4毫米，瓣柄长达4毫米，宽不足1毫米；雄蕊管长1.4厘米；子房长椭圆形，长约6毫米，基部渐狭成长约5毫米的子房柄，胚珠1枚，花柱长约4毫米，柱头小，点状；果椭圆形，长2厘米，宽1.3厘米，亮黑色，不裂，果柄长6-8毫米，果颈长1.2厘米，两者间有一关节。

产云南河口、麻栗坡、马关。生长于石灰岩山地常绿阔叶林中。海拔1000-1400米。印度尼西亚、泰国、越南、不丹、尼泊尔也有。

根药用，性苦、寒，清热解毒，止痛，主治肠炎腹泻、腹胀、胃痛、咽喉痛等。

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