Elatostema integrifolium - Entire-Leaf Elatostema

Entire-Leaf Elatostema is a perennial herb or subshrub, monoecious or dioecious, 60-200 cm tall. Stems are erect, branched, hairless or bristly. Leaves are alternate, hairless; nanophylls absent; stipules narrowly lanceshaped, 6-10 x 1.5-2 mm, with cystoliths; leaf-stalk 1.5-6 mm; leaf blade obliquely elliptic to obliquely inverted-lanceshaped, 5-19 x 2-6 cm, papery or herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, cystoliths prominent, dense; base obliquely wedge-shaped, margin entire or about 2-rounded toothed, tip tapering or with a tail. Male inflorescences are solitary or in pairs, simple, 10-18 x 6-12 mm, stalkless; receptacle 4-6 mm in diam.; bracts fused, about 1 mm; bracteoles boat-shaped. Female inflorescences are solitary or in pairs, 5-8 mm in diameter; flower-cluster-stalk 0-1 mm; receptacle very small; bracts triangular; bracteoles narrowly linear. Male flowers are 4-merous. Achenes are ellipsoid, 8-ribbed. Entire-Leaf Elatostema is found in valley forests, streamsides, below 900-1600 m, in Nepal, Bhutan, NE India, China and SE Asia. Flowering: March-May.