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FOC | Family List | FOC Vol. 10 | Fabaceae

46. Euchresta Bennett in Bennett & R. Brown, Pl. Jav. Rar. 148. 1840.

山豆根属 shan dou gen shu

Shrubs. Leaves alternate, imparipinnate; leaflets 3-7, opposite, estipellate. Flowers solitary along inflorescence rachis; bract persistent, small; bractlets absent. Calyx campanulate to tubular, very oblique and gibbous at back, caducous in fruit; teeth 5. Corolla much exserted; standard suberect, narrow, slightly longer than wings and keel; wings oblong, obtuse, slightly falcate, free, claw very long; keel rather like wings, scarcely cohering at apex. Stamens 10, diadelphous (9+1), vexillary free, remainder slightly connate; anthers small, versatile. Ovary stipitate, 1- or 2-ovuled; style filiform, incurved; stigma capitate, small. Legume stipitate, ovoid or el­lipsoid, drupelike, indehiscent, 1-seeded. Seeds exalbuminous, without strophiole; testa white, membranous. x = 9.

Geographic distribution is the same as that of the tribe.

1 Calyx tubular, longer than 1 cm, upper part broader, lower part narrower.   4 E. tubulosa
+ Calyx cup-shaped or campanulate, shorter than 1 cm   (2)
2 (1) Leaflets often 3(-5); calyx cup-shaped, 2-5 mm; standard not concave at apex.   1 E. japonica
+ Leaflets (3-)5-7(-9); calyx obliquely campanulate, ca. 9 mm; standard retuse at apex   (3)
3 (2) Leaflets to 9, elliptic-lanceolate or narrowly elliptic, tapering at apex.   2 E. formosana
+ Leaflets (3-)5, often obovate or broadly elliptic, apex cuspidate, abaxially appressed lanulose.   3 E. horsfieldii

Lower Taxa


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