Pulvinatusia (Brassicaceae), a new cushion genus from China and its systematic position

Collection: Pensoft Publishers

Keywords: Crucihimalayeae · Topics: Plant Ecology and Taxonomy Studies, Plant and Fungal Species Descriptions, Mediterranean and Iberian flora and fauna

The new genus and species Pulvinatusia xuegulaensis (Brassicaceae) are described and illustrated. The species is a cushion plant collected from Xuegu La, Xizang, China. Its vegetative parts are most similar to those of Arenaria bryophylla (Caryophyllaceae) co-occurring in the same region, while its leaves and fruits closely resemble those of Xerodraba patagonica (Brassicaceae) from Patagonian Argentina and Chile. Family-level phylogenetic analyses based on both nuclear ITS and plastome revealed that it is a member of the tribe Crucihimalayeae, but the infra-/intergeneric relationships within the tribe are yet to be resolved.

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