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FOC | Family List | FOC Vol. 12 | Sterculiaceae | Helicteres

7. Helicteres plebeja Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 39: 67. 1870.

矮山芝麻 ai shan zhi ma

Shrubs, ca. 0.6 m tall. Branchlets erect, very slender, brown stellate when young, glabrescent. Stipules pointed, 6-8 mm, hairy, caducous; petiole 0.3-0.4 cm; leaf blade obliquely linear-lanceolate, 8-10.5 × 1.2-2.5(-3) cm, both surfaces densely brown tomentose when young, adaxially glabrescent, basal veins 3, lateral veins 3-5 on each side of midrib, fine and obscure, base rounded or cordate, margin dentate, apex acute. Inflorescence glomerulose, axillary, ca. 1 cm, few-flowered. Flowers small, red-purple; epicalyx lobes pointed. Calyx tube-shaped, 5-6 mm, teethlike lobes, stellate hirsute, teeth short triangular. Petals 5, apex rounded, glabrous, 4 petals with 2 or 1 auriculate appendices. Staminodes 5, broadly lanceolate, as long as filaments. Ovary ovoid, 5-locular, hairy; ovules 8-10 per locule. Capsule cylindric, 1.5-1.7 × 0.6-0.7 cm, apex acute, yellow-brown stellate. Seeds small, dark brown.

Yunnan [?Bhutan, NE India, Laos, Myanmar, Thailand, Vietnam].


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