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

29. Pilea oxyodon Weddell, Monogr. Urtic. 221. 1856.

雅致冷水花 ya zhi leng shui hua

Pilea bracteosa var. oxyodon (Weddell) H. Hara.

Herbs perennial, stoloniferous, monoecious or dioecious. Stems branched, 10-25 cm tall, succulent distally, with galls on mid portion of internodes, puberulent adaxially, Stipules persistent, light green, oblong-ovate, 4-5 mm, membranous, veinless; petioles unequal in length, 0.5-2 cm, sparsely puberulent; leaf blade abaxially pale green, broadly ovate, unequal in size, 1-3 × 0.6-2.5 cm, herbaceous, 3-veined, lateral veins many, both surfaces sparsely puberulent along veins, base rounded or subcordate, margin sharply serrulate, apex acute. Inflorescences solitary; male distal, a cymose panicle, 2-7 cm; female inflorescence proximal, shorter. Male flowers reddish, pedicellate, in bud obovoid, ca. 1.5 mm; perianth lobes 4, connate 1/2 of length, subapically corniculate; stamens 4; rudimentary ovary small. Female flowers subsessile, in bud ca. 0.5 mm; perianth lobes connate at base, unequal, abaxial lobe cymbiform, longer, subapically corniculate; staminodes 3, scale-like, oblong. Achene brownish, obliquely ovoid, ca. 0.8 mm, compressed, smooth. Fl. Jun-Sep, fr. Sep-Oct.

Wet places of the mixed forests; ca. 2900 m. S Xizang [N India, Nepal, Sikkim].


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