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

7. Sophora tonkinensis Gagnepain, Notul. Syst. (Paris). 3: 18. 1914.

越南槐 yue nan huai

Shrubs to 1.3 m. Stems slender; branches green, glabrous, much branched; branchlets gray hairy. Leaves 10-15 cm; stip­ules very small or nearly absent; petiole 1-2 cm, inflated at base; leaflets 11-33(-39), opposite or nearly alternate; petiolule 1-2 mm, slightly inflated; blades oblong, elliptic, ovate-oblong, or lanceolate, 15-25 × 10-15 mm, leathery, terminal one larg­est, 30-40 × ca. 20 mm, gray-brown hairy abaxially, glabrous or sparsely pubescent adaxially, midrib obvious abaxially, base rounded or slightly cordate, apex cuspidate. Inflorescence a ra­ceme or branched into a panicle from base, terminal, 10-30 cm; rachis and peduncle hairy; bracts small, subulate, hairy. Flow­ers 10-12 mm; pedicel ca. 5 mm. Calyx cup-shaped, ca. 2 × 3-4 mm; teeth small, gray-brown hairy. Corolla yellow or dark purple; standard orbicular, ca. 6 × 5 mm, shortly stipitate; wings slightly longer than standard, oblong or ovate-oblong, 1-auricu­late at base; keel longer, obovate, ca. 9 × 4 mm, 1-auriculate at base. Stamens 10, slightly fused at base. Ovary hairy; ovules 4; style straight, glabrous; stigma hairy. Legumes moniliform, 3-5 cm, sparsely pubescent, dehiscent along both sutures. Seeds 1-3, ovoid, black. Fl. May-Jul, fr. Aug-Dec.

Forests on sunny slopes, scrub on stony mountains, calcareous or sandstone hill slopes; 1000-2000 m. Guangxi, Guizhou, Yunnan [Vietnam].

1 Leaflets (25-)27-33(-39), lanceolate   7c var. polyphylla
+ Leaflets 11-19, elliptic, oblong, or ovate-oblong   (2)
2 (1) Corolla yellow.   7a var. tonkinensis
+ Corolla dark purple.   7b var. purpurascens

Lower Taxa


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