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

3. Scorpiothyrsus xanthostictus (Merrill & Chun) H. L. Li, J. Arnold Arbor. 25: 34. 1944.

卷花丹 juan hua dan

Phyllagathis xanthosticta Merrill & Chun, Sunyatsenia 5: 148. 1940; Scorpiothyrsus glabrifolius H. L. Li.

Shrublets, erect, 10-40 cm tall, with subterranean stems. Stems 4-sided, sulcate, with sparse glandular trichomes, hispid or puberulous when young, later basally subterete and glabrous. Petiole 3-7 cm, sparsely long glandular hispid, gradually glabrescent; leaf blade broadly ovate to suborbicular, 8-17 × 4.5-9.3 cm, papery to substiffly papery, both surfaces glabrous or deciduously furfuraceous, adaxially with yellow, orbicular or elliptic spots, secondary veins (2 or)3 on each side of midvein, base rounded to subcordate, margin serrulate and each tooth with a terminal seta, apex acute to broadly acute. Inflorescences terminal, scorpioid cymose panicles, 4-12 cm, furfuraceous, sparsely setose but often with long glandular trichomes at nodes. Pedicel ca. 1 mm, furfuraceous. Hypanthium tubular-campanulate, 1.5-2 mm, 4-sided. Calyx lobes broadly ovate-triangular, 0.5-2 mm, apex acute to obtuse. Petals white or pink, broadly ovate, slightly oblique, furfuraceous. Stamens 2.5-3 mm; anthers narrowly oblong, ca. 1.5 mm; connective decurrent, forming a spur. Ovary ovoid, margin furfuraceous, apex truncate. Capsule ovoid; hypanthium ca. 1.8 × 2 mm, 4-sided, 8-ribbed, apex truncate. Fl. and fr. Sep-Nov.

● Sparse to dense forests, shaded areas; ca. 500 m. Hainan (Baoting).


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