Spiradiclis liboensis (Rubiaceae), a new species from limestone mountain areas in Guizhou, China

By

Song, Xiao-Fei
Liu, Wen-Jian
Chen, Ao-Xue
Yao, Zheng-Ming
Lan, Hong-Bo
Wu, Lei

Type

Article

Date of Publication

2022

Original Publication

PhytoKeys

Volume

204

Pages

73--81

Subjects

China , Limestone , Rubiaceae , Spiradiclis , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.204.84397

 

Abstract

Spiradiclis liboensis L. Wu & W. J. Liu, a new species in tribe Ophiorrhizeae of Rubiaceae from limestone mountain areas of Guizhou, south-western China, is described and illustrated. It is similar to S. guangdongensis and S. jingxiensis, but differs from the latter two by the following traits: stipule triangular, inflorescence sessile or with peduncle up to 0.5 mm long, pedicel 0.8–2.2 mm long, corolla white, salverform, corolla tube 1.6–2.2 cm long, corolla tube of long-styled morph inside with a villous ring and stigmas positioned at the throat of the corolla tube. The conservation status is assessed as “Vulnerable” (VU) according to the IUCN Red List Categories and Criteria.