单叶绞股蓝 dan ye jiao gu lan

Gynostemma pentaphyllum (Thunberg) Makino f. simplicifolium (Blume) W. J. de Wilde & Duyfjes.

Stem slender, branched, angular-sulcate, pubescent. Leaves simple; leaf blade ovate, 10-15 × 8-9 cm, papery, abaxially glabrous, adaxially puberulent only on veins, basal veins 7-9, base rounded to slightly cordate, margin crenate, apex acuminate; petiole 4-6 cm, pubescent. Tendrils 2-fid. Male flowers: inflorescence paniculate; peduncle filiform, 10-25 cm, pubescent; pedicels filiform, 0.5-2 mm; calyx segments oblong-lanceolate, 0.5-1 mm, puberulent, apex obtuse; corolla pale green-white or pale green-yellow; segments oblong, ca. 3 × 0.7-1 mm, 1-veined, apex obtuse. Fruit pale yellow-green, black when mature, globose, 7-8 mm in diam. Seeds broadly ovate, ca. 4 × 3.5 mm, compressed, verrucose, base rounded, apex acute.

Forests; 1300-1400 m. Hainan, S Yunnan [India, Indonesia, Malaysia, Myanmar, Philippines].

One of us (Jeffrey) treats this taxon as a synonym of Gynostemma pentaphyllum.