墨脱八月瓜 mo tuo ba yue gua

Deciduous. Stems dull gray; lenticels numerous, elliptic. Petiole 15--19 cm; leaf blade palmately 5- or 6-foliolate; leaflets ovate to ovate-elliptic, 8--11 × 4--5.5 cm, papery, abaxially pale green, adaxially dark green, base broadly cuneate, apex acuminate; primary veins 3 from base. Racemes several, fascicled, ca. 11 cm, 6--8-flowered. Male flowers: bracteoles linear, ca. 2 mm. Sepals greenish; outer 3 sepals oblong, ca. 8 × 3 mm; inner 3 sepals narrowly oblong to linear, 5--7 × ca. 1 mm. Petals orbicular, ca. 1 mm in diam. Stamens 6; filaments connate into a tube, ca. 3 mm; anthers ca. 3 mm; connective apical appendage ca. 0.5 mm. Pistillodes 3, linear, ca. 1.5 mm. Female flowers and fruit not seen. Fl. Apr.

* Forest margin; 800--900 m. Xizang (Mêdog Xian).