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

17. Pilea rotundinucula Hayata, Icon. Pl. Formosan. 6: 49. 1916.

圆果冷水花 yuan guo leng shui hua

Pilea distachys Yamamoto; P. funkikensis Hayata var. rotundinucula (Hayata) S. S. Ying.

Herbs perennial, rhizomatous, glabrous, monoecious or dioecious. Stems erect or ascending, 20-60 cm tall, succulent, with galls on mid portion of internodes. Stipules persistent, broadly triangular, ca. 1 mm, membranous, veinless; petiole subequal in length, 0.5-4 cm; leaf blade brownish when dry, elliptic- or oblong-lanceolate, subequal in size, 5.5-22 × 1.1-7.5 cm, membranous to herbaceous, triplinerved or 3-veined, lateral veins many, apical ones conspicuous, transverse, reticulate, prominent abaxially, base cuneate, margin serrulate, sometimes entire, apex acuminate. Inflorescences in pairs, male a dichotomously branched cyme, 2.5-9 cm overall, peduncle 1-3.2 cm; female cymes sometimes compacted into clusters, 0.6-3.5 cm. subsessile or shortly pedunculate. Male flowers pedicellate, in bud obovoid, ca. 2 mm; perianth lobes 4, ovate, connate about 1/2 of length; stamens 4; rudimentary ovary small, conic. Female flowers subsessile, in bud ca. 1.2 mm; perianth lobes connate at base, unequal, abaxial lobe cymbiform, longer, subapically corniculate; staminodes 3, scale-like, oblong. Achene subglobose, 0.7-0.8 mm, slightly compressed, oblique, verrucose. Fl. Apr-Jun, fr. Jul-Sep.

* Shaded wet places in forests, near streams, sunny roadsides and rocks in moist places; 300-1500 m. Taiwan.


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