A new species, Primula pengzhouensis (Primulaceae), from central Sichuan, China, is described and illustrated. It is assigned to Primula sect. Aleuritia subsect. Yunnanensis, and is most similar to P. socialis, but can be easily distinguished from that species by its much larger flower and elliptic or ovate-elliptic leaves.
Historically, the taxonomic study of the Asian genus Fordiophyton has had some gaps. Several specimens from Guangdong (China) have been misidentified as Fordiophyton brevicaule C. Chen. The new species proposed here shares with F. brevicaule the densely hirsute stem, rosetted leaves and glabrous hypanthia, but it is distinguished by its glabrous leaves, winged petioles, oblong petals lacking a single trichome at the apex, and purplish anthers in the longer set of stamens. The phylogenetic analyses indicate that it is a member of Fordiophyton and sister to F. brevicaule. Based on morphological and molecular data, we here recognize it as a new species, Fordiophyton zhuangiae S. Jin Zeng & G. D. Tang, which is described and illustrated.
With the rediscovery of Ardisia gigantifolia, the long-standing confusion with A. pseudoverticillata, A. kteniophylla and A. dasyrhizomatica owing to the misinterpretation of the type of A. gigantifolia is clarified. It is shown that A. dasyrhizomatica is a later synonym of A. gigantifolia, while A. kteniophylla and A. pseudoverticillata are conspecific and represent another species for which A. kteniophylla is the earliest name available. Ardisia kteniophylla is the correct scientific name for the Chinese medicinal plant 'Zou Ma Tai'.
A new species of Stimpsonia (Primulaceae), S. nanlingensis G.H. Huang & G. Hao, from Guangdong, China, is described and illustrated as the second species in the genus. In general morphology it resembles S. chamaedryoides but can be distinguished by its foliose bracts and a corolla with a shorter tube and shorter truncate or obtuse lobes.
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