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Chinese Plant Names | Family List | Urticaceae | Pilea

7. Pilea hexagona C. J. Chen, Bull. Bot. Res., Harbin. 2(3): 46. 1982.

六棱茎冷水花 liu leng jing leng shui hua

Description from Flora of China

Subshrubs small, stipules, petioles, both surfaces of leaf base, and perianth lobes of flowers densely covered with cystoliths. dioecious; Stems roundly 6-angled, ca. 20 cm tall, ca. 6 mm in diam., sparsely pubescent on grooves; internodes 1.5-4 cm. Leaves crowded at stem apex; stipules soon deciduous, green, oblong, 25-30 mm, papery, longitudinally 9-ribbed; petiole unequal in length, 4-11 cm; leaf blade abaxially pale green, adaxially dark green, elliptic, ovate or oblong, symmetric, subequal in size, 10-18 cm, succulent, but thick papery when dry, 3-veined, lateral veins 8-12 each side, elevated abaxially, base rounded or cordate, margin crenate-serrate or subundulate from middle, apex short acuminate or cuspidate. Inflorescences solitary; borne on tops of branches, male cymes dichotomously branched 2-3 times; ca. 5 cm, glomerules capitate, 6-10 mm in diam.; female inflorescence a lax corymbose cyme, 7-10 cm (including gracile peduncle 6-8 cm). Male flowers pedicellate, in bud ca. 2 mm; perianth lobes 4, cymbiform, connate about 1/2 of length; stamens 4; rudimentary ovary minute. Female flowers subsessile, ca. 1 mm; perianth lobes light blue, dorsal-ventral lobes cymbiform, longer than lateral, lateral 2 lobes oblong, subapically corniculate; staminodes dark brown, subsucculent. Achene purplish spotted. ovoid, ca. 2.8 mm, compressed. Fl. Apr-May, fr. Jun-Sep.

Wet rocky places in limestone mountains; ca. 200 m. SE Yunnan (Hekou) [N Vietnam].


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