Trichosanthes mushaensis Hayata.

Stems slender. Petiole 2-3 cm, hairy; leaf blade triangular-cordate, 6-10 × 4-6 cm, papery, unlobed, margin dentate, adaxially scabrous, apex acuminate or acute. Male raceme 5-10-flowered; peduncle 8-9 cm; pedicel ca. 3 mm; bracts obovate, 1-1.5 × 0.7-1.1 cm, margin irregularly crenate-dentate; calyx tube cylindric, dilated at apex, ca. 3 × 0.8 mm; segments linear, ca. 6 mm. Female flowers unknown. Fruit oblong, 7-10 × 6-7 cm. Seeds elliptic, flattened. Fl. Aug.

Taiwan [Japan].