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Spiradiclis tubiflora, a new Rubiaceae species, is described from a limestone area of southern China. It is similar to Spiradiclis glandulosa and S. umbelliformis, but differs from the latter two in its linear stipule, short peduncle and tubular-funnelform corolla with a distinctively enlarged tube. The colour photograph, illustrations, detailed descriptions and conservation status of the new species are provided. [ABSTRACT FROM AUTHOR]

Spiradiclis cavicola L. Wu, Hareesh & B. Pan (Rubiaceae), a new species from limestone caves in Guizhou and Guangxi provinces, southwestern China, is described and illustrated. It is morphologically similar to S. scabrida, but can be easily distinguished by its 0.5-3 cm long petiole, elliptic to oblong leaf blade, and homostylous flowers with anthers and stigma positioned at the throat of corolla tube, or sometimes stigma slightly above anthers. [ABSTRACT FROM AUTHOR]