1. Scorpiothyrsus shangszeensis C. Chen, Bull. Bot. Res., Harbin. 4(3): 63. 1984.
上思卷花丹 shang si juan hua dan
Shrublets, erect, 50-100 m tall. Branches spreading, woody, basally terete but apically 4-sided, with dense glandular trichomes and pilose but glabrescent. Petiole 4-10.5 cm, with dense glandular trichomes and pilose; leaf blade ovate to broadly ovate, 7-14 cm × 4.5-9 mm, papery or stiffly papery, both surfaces sparsely strigose and puberulous, secondary veins 4 on each side of midvein, base cordate, margin ciliate and denticulate to subentire with each tooth having a terminal seta, apex acuminate. Inflorescences terminal, scorpioid cymose panicles, ca. 8.5 × 6 cm, spreading. Pedicel ca. 1.5 mm, with glandular trichomes and pilose. Hypanthium campanulate, 4-sided, ca. 2.5 mm, with glandular trichomes and pilose. Calyx lobes narrowly lanceolate, ca. 1.5 mm. Petals white or pink, oblong to broadly ovate, 4.5-7 × ca. 5 mm, apex rounded to shortly acute. Stamens 4.5-5.5 mm; anther 2-2.5 mm, base 2-setose; connective minutely inflated. Ovary half inferior, ovoid, not crowned, glabrous. Capsule ovoid; hypanthium ca. 2 × 2.5 mm, 4-sided, 8-ribbed, with glandular trichomes and pilose, apex truncate. Fl. May-Jun, fr. Jun-Jul.
● Sparse or dense forests, mountain slopes, valleys, streamsides, shaded damp places; 600-900 m. Guangxi (Shangsi).