Abstract
Primulina serrulata R.B.Zhang & F. Wen, a new species from a limestone area in southeastern Guizhou, China, is described and illustrated here. The new species is morphologically related to P. fimbrisepala (Hand.-Mazz.) Y.Z.Wang. We examined the morphological differences between these congeners and provide illustrations and photographs of this new species in this paper.
Highlights
The formerly monotypic genus, Primulina Hance, has become the largest genus in the subfamily Didymocarpoideae of Gesneriaceae in China (Weber et al 2013, Xu et al 2017, Wen et al 2019)
Morphological observations of the new species were carried out based on living plants as well as dry specimens
Primulina serrulata mainly differs from its congener, P. fimbrisepala, by its purplish-blue flowers which lack the dark purple spots inside the corolla, cuneate leaf blade base, anthers glabrescent and smaller stigma ca. 1 mm long
Summary
The formerly monotypic genus, Primulina Hance, has become the largest genus in the subfamily Didymocarpoideae of Gesneriaceae in China (Weber et al 2013, Xu et al 2017, Wen et al 2019). Based on extensive literature surveys and field observations, we discovered that most species of Primulina occur in the karst area of southern and southwestern China and northern Vietnam.
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