翅茎绞股蓝 chi jing jiao gu lan

Stem stout, 4-10 m high, 5-10 mm in diam., branched, 3-angled, angles winged, wings 1.5-3 mm wide, glabrous or sparsely puberulent at nodes. Tendrils filiform, apex bifid. Leaves pedate, 7-foliolate; petiole 5-8 cm, glabrous; leaflets rhombic-elliptic or obovate-elliptic, papery, abaxially glabrous, adaxially pilose, base cuneate, margin serrate, apex acuminate, mucronate; central leaflet 6-12 × 2-4 cm, lateral leaflets smaller. Plants dioecious. Male flowers in axillary panicles, 7-9 cm; bracteoles linear, ca. 1.5 mm; flowers ca. 2 mm in diam.; pedicels 2-2.5 mm; calyx segments triangular, ca. 0.8 × 0.5 mm; corolla segments ovate-lanceolate, ca. 1.5 × 1 mm; filaments very short, connate; anthers ovoid. Female flowers in axillary or terminal panicles, 1.5-3.5 × 1.2-1.8 cm, glabrous; pedicel 1-1.5 mm; basal bract 1, linear; calyx 5-lobed; segments triangular, ca. 0.5 × 0.4 mm; corolla 5-parted; segments lanceolate, ca. 2 × 0.5 mm, apex acuminate; ovary compressed globose, ca. 1.5 mm in diam., 2-locular, each locule with 1 ovule; styles 2, free; stigmas 3-fid. Berry greenish, compressed globose, 2.5-3 × 5.5-6 mm, glabrous, with persistent corolla and styles; fruit stalks filiform, 3-6 mm. Seeds 2, cream colored, broadly cordate, ca. 2 × 3 mm, spiniform-tuberculate. Fl. and fr. Sep-Nov.

● Moist places along small stream valleys; 400-700 m. Guizhou (Renhuai, Ziyun).