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FOC | Family List | FOC Vol. 5 | Urticaceae | Elatostema

50. Elatostema filipes W. T. Wang, Bull. Bot. Lab. N. E. Forest. Inst., Harbin. 7: 49. 1980.

丝梗楼梯草 si geng lou ti cao

Herbs perennial, dioecious, 11-25 cm tall, glabrous. Stems ascending or erect, simple. Leaves alternate; nanophylls absent; stipules lanceolate, 4-9 × 1.5-2 mm, with cystoliths; petiole absent; leaf blade obliquely oblong or oblong-lanceolate, (2-) 6-11 × 1.4-3 cm, herbaceous or papery, major basal lateral veins both arising at base of leaf blade, cystoliths obscure; base with broader half auriculate, margin dentate, apex acuminate. Male inflorescences solitary, simple, 3-9 mm in diam.; peduncle 1-3 cm, 0.1-0.4 mm in diam.; receptacle 1-1.5 mm in diam.; bracts connate, ca. 2.5 mm; bracteoles broadly linear. Female inflorescences solitary, 30-flowered or more, ca. 5.5 mm in diam.; peduncle ca. 1 mm; receptacle ca. 2 mm in diam.; bracts triangular; bracteoles spatulate or spatulate-linear. Male flowers 4-merous. Achenes ellipsoid, 10-ribbed. Fl. Jun-Oct.

* Streamside rocks in mountains; 900-1200 m. Guangxi.

1 Staminate inflorescences 3-5 mm in diam.   50a var. filipes
+ Staminate inflorescences 6-9 mm in in diam.   50b var. floribundum


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