Tetradenia acuminatissima Hayata, Icon. Pl. Formosan. 3: 166. 1913.

Small trees. Branchlets subverticillate, glabrous. Leaves alternate or clustered at apex of branchlet; petiole 1-1.5 cm, glabrous; leaf blade ovate-lanceolate to lanceolate, 6-9 × 1.8-2.5 cm, glabrous on both surfaces, pinninerved or subtriplinerved, lateral veins 5 pairs, base obtuse or cuneate, apex acuminate to caudate-acuminate. Umbels axillary or lateral, sessile or subsessile, male umbel 4-flowered. Pedicel 4-5 mm. Perianth segments 4, rotund. Male flowers: fertile stamens 6; filaments pubescent at base, of 3rd whorls each with 2 reniform glands at base; rudimentary pistil ovoid. Fruit ovoid, 7-10 mm; fruiting pedicel ca. 1 cm, pubescent to glabrous. Fr. Oct-Nov.

● Evergreen broad-leaved forests on high mountains. Taiwan.