Description from Flora of China
Fissistigma hainanense Merrill, J. Arnold Arbor. 6: 131. 1925; Desmos hainanensis (Merrill) Merrill & Chun; F. maclurei Merrill (1923), not Merrill (1922); Meiogyne hainanensis (Merrill) Bân; Oncodostigma hainanense (Merrill) Tsiang & P. T. Li.
Trees to 16 m tall, evergreen, d.b.h. to 50 cm. Branchlets, bracteoles, pedicels, outer petals on both surfaces, inner petals outside, and fruit rust-colored pubescent. Petiole 4-5 mm, pubescent; leaf blade oblong to oblong-lanceolate, (4-)6-10(-16) × (1.5-)2-3.5(-5) cm, thinly papery, drying brown or brownish green, glabrous except for veins, midvein adaxially impressed, secondary veins 6-10 on each side of midvein, base rounded, apex shortly acuminate. Bracts ovate, 2-4 mm. Flowers ca. 1.5 cm in diam. Pedicel 6-7 mm; bracteoles ovate, 2-4 mm. Bud globose. Sepals ovate-triangular, 4-5 mm. Petals yellowish green; outer petals oblong-ovate, 1.4-1.7 × 1-1.1 cm; inner petals slightly thicker and shorter, ca. 1.4 × 0.8-0.9 cm, cucullate, inside basally concave and glabrous. Stamens ca. 2 mm. Carpels oblong, densely villous; stigmas clavate, erect, apex entire and puberulent. Monocarps to 8, shortly stipitate, ellipsoid, cylindric, or obovoid, 2-5 × 2-2.5 cm, constricted between seeds, longitudinally ridged on one side. Seeds 6-10 per monocarp, pale yellowish brown, obliquely quadrate. Fl. Apr-Dec, fr. Aug-Mar.
● Dense forest in valleys; 300-600 m. S Guangxi, Hainan.