少瓣秋海棠 shao ban qiu hai tang

Begonia cavaleriei H. Léveillé var. pinfaensis H. Léveillé.

Herbs. Rhizomes elongate, to 2.5 cm in diam. Leaves basal; stipules ovate, 0.8-1.9 cm × 4-12 mm, glabrous, apex acuminate or cuspidate; petiole to 30 cm, glabrous; blade abaxially red, adaxially dark green, peltate, ovate-oblong to ovate-lanceolate, slightly asymmetric, 7-20 × 3-11 cm, ca. 2 mm thick, glabrous, venation palmate, 5-7-veined, base rounded, margin entire, apex acuminate. Inflorescences to 40 cm, glabrous; bracts ovate, 5-8 × 3-6 mm, glabrous, apex acuminate. Staminate flowers: pedicel 0.9-1.9 cm; tepals 2, pink, broadly ovate to oblate-orbicular, 1.5-1.9 × 1.2-2.3 cm, apex acute; stamens ca. 60; filaments 1-3.7 mm, fused at base; anthers obovoid, 0.8-1.7 mm, apex truncate or emarginate. Pistillate flowers: pedicel 2.5-3.6 cm; tepals 2, pink, orbicular-ovate, 1.4-2.1 × 1-2.5 cm, apex acute; ovary 3-loculed; placentae axile, bilamellate; styles 3, 5.5-8.1 mm, free; stigmas 2-cleft, spiraled. Capsule nodding, unequally 3-winged; abaxial wing lunate, ca. 5 × 1.9-2 cm; lateral wings smaller, ca. 2 mm.

● Scrubby vegetation, on limestone rocks; (600-)800-1000 m. W Guangxi (Jingxi, Napo), SE Yunnan (Malipo).