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FOC | Family List | FOC Vol. 10 | Fabaceae | Euchresta

3. Euchresta horsfieldii (Leschenault) Bennett in Bennett & R. Brown, Pl. Jav. Rar. 148. 1840.

伏毛山豆根 fu mao shan dou gen

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-ellip­tic, 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. Ra­cemes 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 ob­tuse and retuse, base small auriculate at both sides, condupli­cate, 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. Leg­ume 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, In­dia, Indonesia, Laos, Nepal, Philippines, Thailand, Vietnam].


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