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Stephania brachyandra

Description from Flora of China

Deciduous and herbaceous vines. Stems slightly twining, light gray or slightly brown when dry, longitudinally striate, glabrous. Petiole longer than or subequal to leaf blade; leaf blade peltate, insertion 1.5-3 cm from base, triangular or subrounded, 8-18 cm, width subequal to length, thinly papery, both surfaces glabrous or abaxially slightly puberulent along veins, base subtruncate to subrounded, margin undulate to subentire, apex obtuse or sometimes mucronate, palmately 10-veined, raised abaxially, reticulation slender and visible. Inflorescences compound umbelliform cymes, axillary or on short axillary branches with reduced leaves. Male inflorescences slightly slender; peduncle 3-7 cm; umbellet pedicels 5-7, 1.5-3 cm; cymelets slightly dense. Male flowers: pedicel ca. 0.5 mm; sepals 6, outer whorl 1-1.3 mm, inner whorl obovate or broadly obovate, 1.7-2.2 mm, relatively broader; petals 3(or 4), fleshy, very broad, 0.8-1 × 1.5-1.9 mm, margin involute, imbricate; synandrium 0.5-0.7 mm. Female inflorescences condensed to capitula; umbellet pedicel and cymelet pedicel absent when blooming. Female flowers: sepal usually 1, ovate-lanceolate, ca. 1 mm; petals 2, rotund, ca. 0.6 mm. Fruiting pedicel not fleshy. Drupes red, broadly obovate; endocarp 9-10 × ca. 8 mm. Fl. May-Jun, fr. Jun-Aug.

The tuberous rootstock of Stephania brachyandra contains the alkaloid isocorydine.

Ravine sides in forests; ca. 1000 m. SE Yunnan [Myanmar].


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