A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae).

ABSTRACT: In the Flora of China account of Saxifraga mengtzeana Engl. & Irmsch., eight synonyms were attributed to it and one variant, recognized as Saxifraga epiphylla Gornall & Ohba, was split from it. This study reevaluates the taxonomic status of some of the synonyms and of the segregated species in light of new evidence presented here. Morphological and molecular evidence demonstrate that collections from northwestern Yunnan and Sichuan are genetically differentiated from those in southeastern Yunnan and neighboring Guangxi. Observations in the field and in cultivation show that the peltate petiole attachment diagnostic of S. mengtzeana var. peltifolia Engl. & Irmsch. is developmentally labile. Similar observations combined with molecular data show that vivipa

SUBMITTER: Zhang XJ 

PROVIDER: S-EPMC10008273 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature