Vitis ruyuanensis C. L. Li

Plants polygamo-dioecious. Branchlets terete, slender, with inconspicuous longitudinal ridges, glabrous; tendrils unbranched. Leaves simple, undivided or 3-5-lobed; stipules caducous; petiole 1.5-2 cm, glabrous; leaf blade abaxially purplish, sagittate or ovate-hastate, 5-8 × 3-4 cm, abaxially pubescent on veins, adaxially glabrous or with sparse very short hairs, basal veins 5, lateral veins 5 or 6 pairs, veinlets conspicuous but not raised, base cordate, notch acute or obtuse, margin irregularly finely 7-10-toothed on each side, apex acuminate. Panicle leaf-opposed, 7-9 cm, basal branches undeveloped; peduncle 1.5-2 cm, subglabrate. Pedicel 2-3 mm, subglabrate. Buds obovoid, 1.5-2 mm, apex rounded. Calyx ca. 2 mm, entire. Filaments filiform, ca. 1 mm; anthers yellow, elliptic, ca. 0.5 mm. Ovary conical; style slender. Berry globose, 6-8 mm in diam. Seeds obovoid, base rostrate, apex retuse, chalazal knot rounded, ventral holes furrowed from base nearly to apex. Fl. Apr-May, fr. Jun-Jul.

Guangdong.

● Shrublands on hillsides; ca. 200 m.

Vitis ruyuanensis (known locally as ru yuan pu tao, which means Ruyuan grape) is a species of polygamo-dioecious plant in the grape family native to the Chinese province of Guangdong. Here it grows in shrublands or along hillsides at around 200 meters. Flowers, blooming between April and May, give way to the development of globular berries in June and July.