石山羊蹄甲 shi shan yang ti jia

Lianas, with tendrils, pubescent throughout. Stipules cadu­cous; petiole 0.8-1.5 cm, stout, pubescent; leaf blade subor­bicular, ca. 5 cm in diam., both surfaces pubescent, veins 9-13, base cordate, apex bifid to 1/3, with acute lobes. Inflorescence axis to 3.5 cm; bracts lanceolate, ca. 5 mm; bracteoles linear-lanceolate, ca. 4 mm, inserted beneath hypanthium. Hypan­thium tubular, 6-8 mm. Calyx segments 2 or 3. Petals subequal, elliptic, including claw to 1.5 cm, outside densely hirsute, in­side sparsely so, clawed, with acute apices. Fertile stamens 3; filaments pubescent in lower part. Staminodes 2-4. Ovary and style hairy; stigma peltate. Legume unknown. Fl. Apr.

● Limestone hilltops. Guangxi (Tianyang).

This species is known only from the type locality.