Climbers to 6 m tall, most parts densely red tomentose, glabrescent. Petiole 1-1.5 cm; leaf blade spatulate to elliptic-oblong, 5-11 × 1.9-4.1 cm, leathery, abaxially yellowish brown pilose, adaxially glabrous, secondary veins 16-22 on each side of midvein and adaxially impressed, reticulate veins inconspicuous, base rounded to broadly cuneate, margin revolute, apex rounded to retuse. Inflorescences terminal or leaf-opposed, paniculate; peduncle to 28 cm; bracts broadly triangular, red tomentose. Pedicel 2-3 mm, 1- or 2-bracteolate. Flower buds conic, ca. 1.1 cm. Sepals broadly triangular, ca. 4 × 3 mm, glabrous. Outer petals ovate-elliptic, ca. 11 × 5 mm, inside glabrous; inner petals ovate-oblong, ca. 8 × 4 mm. Stamens oblong, ca. 1 mm; connectives conic. Carpels oblong, 1.5-2 mm, sericeous pubescent; ovules 10 per carpel, in 2 series; stigmas glabrous, apex 2-cleft. Fruit not seen. Fl. Oct, fr. Nov-Dec.

Fissistigma tungfangense is listed as Critically Endangered (CR B1ab(i,ii)) by the IUCN Red List of Threatened Species (Version 2010.3; http://www.iucnredlist.org; accessed on 8 Oct 2010).

● Sparsely forested slopes; 400-600 m. W Hainan.