Rubiaceae

Spiradiclis sp.

Ha Giang Prov., Quan Ba Distr., Can Ty Commune, Sin Suoi Ho Village, around point 23.09566ºN 105.02142ºE. Very steep mountain slopes composed of solid highly eroded karstic limestone at elevation 800–1000 m a.s.l. Remnants of primary evergreen broad-leaved and coniferous (with Calocedrus rupestris and Xanthocyparis vietnamensis) humid forest. Terrestrial herb or undershrub to 1 m tall in open rpcky place. Flowers purple. Occasional. 11 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1558.