Description from
Flora of China
Blastus fengii S. Y. Hu; B. hirsutus H. L. Li; B. latifolius H. L. Li; Sporoxeia hirsuta (H. L. Li) C. Y. Wu; S. latifolia (H. L. Li) C. Y. Wu & Y. C. Huang; S. latifolia var. fengii (S. Y. Hu) C. Chen.
Shrubs 1-1.2 m tall. Stems obtusely 4-sided, densely puberulous when young, glabrescent. Petiole 3.5-8 cm, when young setose or puberulous, glabrescent; leaf blade orbicular, suborbicular, or subobovate-orbicular, 9.5-15 × 7.5-12 cm, stiffly papery, both surfaces furfuraceous or abaxially setose on veins otherwise densely glandular squamose, adaxially setose or strigose on veins otherwise puberulous, secondary veins 2(or 3) on each side of midvein, base obtuse, broadly cuneate, or subcordate, margin inconspicuous densely denticulate with short to long setose-tipped teeth, apex acute. Inflorescences in axils of leaves or at petiole scars on older branches, umbellate; bracts subulate, small, caducous. Pedicel 0.5-1 cm, ± puberulous. Hypanthium campanulate-funnelform, ca. 6 mm, obtusely 4-sided, ± puberulous. Calyx lobes broadly ovate to triangular-ovate, 2-3 mm, inside puberulous, apex acute to nearly acuminate. Petals pink, broadly ovate, 7-9 × ca. 6 mm, oblique, apex acuminate. Stamens equal; filaments 4-8 mm; anthers lanceolate, 5-7 mm, 2-tuberculate at base; connective inflated, extended, forming a spur ca. 1 mm. Ovary urceolate, ciliate, apex obtuse 4-denticulate. Capsule subglobular, ca. 5 mm in diam., obtusely 4-sided; hypanthium subglobular, 8-ribbed. Fl. Jul-Aug, fr. Oct-Dec.
Broad-leaved evergreen forests, stony mountain slopes; moist places; 1400-2800 m. Yunnan [Myanmar].