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Morphological and phylogenetic analyses reveal the new species Russula pallidula from China

Bin Chen, Xumeng Jiang, Jie Song, Junfeng Liang, Shengkun Wang & Junkun Lu

Sydowia 71: 1–10

Published online on January 30th, 2019

Russula pallidula, sp. nov., a new species from southern China, is morphologically delimited, illustrated and its relationship specified by phylogenetic analysis. It is characterized by pale green to pale olive-buff pileus with minute white to cream scales and longitudinal stripes at margin, safrano-pink and rarely forked lamellae, globose to subglobose basidiospores with bluntly conical warts, clavate to subclavate to fusiform cheilocysitidia and pleurocysitidia with variably rounded tips, and a pileipellis with inflated hyphal terminations and slender pileocystidia. Molecular phylogenetic analysis of nrITS, rpb2, and nrLSU sequences indicate that R. pallidula belongs to Russula subg. Heterophyllidia sect. Virescentinae.

Keywords: Russulaceae, morphology, phylogeny, taxonomy. 1 new species.

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