Spiradiclis densa sp. nov. (Rubiaceae) from limestone areas in Guangxi, China

21 May 2019

Lei, Wu

A new species of Rubiaceae, Spiradiclis densa, is described and illustrated from southwestern China. It is similar to S. tomentosa, but differs in the elliptic or oblong leaf blades, distylous flowers and insides with dense pubescence near throat of corolla tube. The conservation status of the new species is preliminarily assessed as ‘Vulnerable’ according to IUCN categories and criteria.