Complemented Description of Ardisia phankelociana (Primulaceae)

Ardisia phankelociana (Primulaceae) is restricted to the limestone areas in Ha Giang and Bac Kan provinces, northeastern Vietnam. Its vegetative characters and fruits were first described in 2017, but not the flowers, which are most important to distinguish the species from morphologically similar ones. Based on newly collected material, we complemented the description by adding the floral characters. Colour illustrations and taxonomic notes are also provided.