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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Pachystylidium

1. Pachystylidium hirsutum (Blume) Pax & K. Hoffmann in Engler, Pflanzenr. 68(IV. 147. IX-XI): 108. 1919.

粗柱藤 cu zhu teng

Tragia hirsuta Blume, Bijdr. 630. 1826; T. delpyana Gagnepain.

Subshrubs, twining, ca. 3 m tall, hirsute, with stinging hairs. Stems slender, woody. Stipules triangular, 1.5-4 mm; petiole 0.8-4 cm; leaf blade ovate or elliptic, 5-13 × 3-10 cm, thickly papery, sparsely hirsute to glabrescent with midrib mostly hirsute, base shallowly to moderately cordate, margin serrate, apex abruptly acuminate; lateral veins 3 or 5 pairs. Inflorescence 1-8 cm, hirsute and puberulent, peduncle 0.4-3 cm, with 1-5 female flowers and many male flowers; bracts narrowly lanceolate, 1-2.2 mm. Male flowers: pedicel 1.5-2.3 mm; calyx lobes ovate, ca. 1 mm; anther locules ca. 0.5 mm. Female flowers: pedicel ca. 1 mm; sepals lanceolate, elliptic, or ovate, 1.5-2.5 mm, sparsely pubescent or glabrescent; ovary densely hirsute; styles connate into a stout-cylindric or ellipsoid column, free style tips recurved. Fruiting pedicel 3-5 mm; fruiting sepals persistent, reflexed; capsule ca. 1 cm in diam., drying dark brown, sparsely setose. Seeds subglobose, 3-5.5 mm in diam., mottled pale brown and dark reddish brown. Fl. and fr. Aug.

Seasonally dry open scrub. Yunnan ("Lam Ko District") [Cambodia, India, Indonesia, Laos, Philippines, Thailand, Vietnam].


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