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FOC | Family List | FOC Vol. 13 | Melastomataceae | Sonerila

1. Sonerila plagiocardia Diels, Bot. Jahrb. Syst. 65: 117. 1932.

海棠叶蜂斗草 hai tang ye feng dou cao

Fordiophyton begoniifolium H. L. Li; Sonerila alata Chun & F. C. How ex C. Chen; S. alata var. triangula C. Chen.

Herbs, erect or sometimes creeping, 30-40 cm tall, base woody. Stems 4-sided, succulent, winged, with sparse glandular trichomes, glabrescent. Petiole 2-10 cm, winged, puberulous and sparsely setose; leaf blade ovate, (2.5-)5-18 × 3.5-5.5(-10) cm, papery to membranous, adaxially puberulous and sometimes purple on veins, secondary veins (2-)4(or 5) on each side of midvein, base oblique or symmetrically deeply cordate, margin serrulate, abaxially puberulous and sparsely setose on veins, apex acuminate. Inflorescences terminal and axillary, scorpioid cymes, 3-6 cm, to 8-flowered, inconspicuously winged, sometimes branched, with sparse glandular trichomes; peduncle 2-4 cm. Pedicel 2-5 mm but to 1.8 cm in fruit, with sparse glandular trichomes or puberulous. Hypanthium tubular-campanulate, middle slightly contracted, 6-8 mm, 3-sided, 6-ribbed, puberulous and with sparse glandular trichomes. Calyx lobes 3, broadly triangular, 1-3 mm, slightly with glandular trichomes. Petals pink to red, oblong-obovate, 1-1.1 cm, middle vein with a few glandular trichomes, apex shortly acuminate. Stamens 3, usually 2 shorter and 1 longer, rarely equal. Longer stamens with filament ca. 8 mm; anthers oblong, 5-7 mm on longer stamen, ca. 9 mm on shorter stamens, base forked, apex rounded and shortly beaked. Ovary flask-shaped, apex truncate and with a membranous 3-lobed crown. Capsule campanulate, 7-8 × ca. 5 mm, 3-sided, 3-lobed; hypanthium 6-ribbed, slightly with glandular trichomes or glandular. Fl. Aug-Sep, fr. Oct-Nov.

Dense forests, hillsides, valleys, shaded damp places, stony soil rich in humus; 600-2500 m. Guangdong, Guangxi, Jiangxi, SE Yunnan [Cambodia, Laos, Malaysia, Thailand, Vietnam].


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