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Elatostema atroviride

Description from Flora of China

Elatostema atroviride var. lobulatum W. T. Wang; E. leiocephalum W. T. Wang; E. papilionaceum W. T. Wang.

Herbs perennial, monoecious or dioecious, 20-30 cm tall. Stems ascending or erect, branched, pubescent. Leaves alternate; nanophylls absent; stipules linear or linear-lanceolate, 3-3.5 × 0.5-0.8 mm, strigillose, with cystoliths; petiole 2-4.5 mm; leaf blade obliquely elliptic or obovate, 6-10 × 2.5-5 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface densely puberulent along nerves, adaxial surface sparsely strigillose, cystoliths conspicuous, dense; base obliquely cuneate, margin dentate, apex cuspidate to short acuminate. Male inflorescences solitary, simple, 20-28 mm in diam.; peduncle ca. 15 mm; receptacle elliptic, ca. 27 × 17 mm; bracts absent; bracteoles linear. Female inflorescences solitary, nearly oblong or papilionaceous, 5-14 × 4-10 mm; peduncle 1.5-2(-9) mm; receptacle oblong, 5-12 × 3-7 mm; bracts triangular; bracteoles spatulate-linear. Male flowers 4-merous. Achenes ellipsoid, ribbed, tuberculate. Fl. Aug-Nov.

Forests on limestone hills, shaded wet areas in mountains; 200-1500 m. SW Guangxi, SW Guizhou [N Vietnam].


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