Tetradenia parvigemma Hayata, Icon. Pl. Formosan. 5: 175. 1915.

Small trees. Branchlets and petioles glabrous. Leaves alternate or clustered, subverticillate; petiole 1.5-2 cm; leaf blade ovate-oblong or obovate-oblong, 8-9 × 3.5-4 cm, distinctly foveolate on both surfaces, glaucous abaxially, triplinerved, lateral veins 3 pairs, lowermost pair arising ca. 5 mm from base, base obtusely rounded or sometimes acute, apex acuminate. Umbels axillary, 5-7-flowered; peduncle extremely short or lacking. Pedicel ca. 2 mm, yellow-brown pubescent. Perianth segments 4, triangular-oblong. Male flowers: fertile stamens 6; filaments pubescent at base, of 3rd whorls each with 2 small stipitate rounded glands at base; rudimentary pistil present; style pubescent. Female flowers: staminodes 1-1.5 mm, pubescent at base; ovary ovoid, glabrous at base. Fl. Feb-Mar.

● Evergreen broad-leaved forests. SC Taiwan.