A new species of Dichocarpum shows unique morphological traits, highlighting its phylogenetic relationship within Ranunculaceae.
A new species of Dichocarpum from Guizhou, China, is described and illustrated. Morphologically, it resembles D. auriculatum , D. trifoliolatum , D. basilare , D. franchetii , D. arisanense , D. adiantifolium , and D. uniflorum . However, it differs from these seven species by its creeping stolons, 3–5-foliolate leaflets with scalloped or suborbicular shape, and an inflorescence consisting of a single flower. The phylogenetic relationship with other species of the genus is examined based on three chloroplast gene segments ( matK, trnL-F, trnH-psbA ) and one nuclear ribosomal DNA region (ITS). In addition, an identification key to all Chinese species of Dichocarpum is provided.
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Wang et al. (2025) studied this question.
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