A new intersectional hybrid in the genus Potentilla (Rosaceae) from Northern Mongolia

Abstract

Potentilla × vanzhilii is described as a new intersectional hybridogenous species found in Northern Mongolia. The plant has been gathered twice in the north-eastern part of the Tarbagatai Range, Central Khangai (Khangai botanical-geographical region of Mongolia). Potentilla nivea (sect. Niveae) and P. multifida (sect. Multifidae) are supposed to be parental species for P. × vanzhilii. Besides, P. altaica, P. rhipidophylla, and P. tuvinica are found to be related to P. × vanzhilii. The features that distinguish these closely related species from P. × vanzhilii are indumentum and the morphology of leaf blades and generative organs. The distribution area, ecology and illustrations of the new nothospecies are provided, and its stability is proved. Determination key for P. × vanzhilii and related species is also given

Keywords

• altai
• arkhangai aimag
• khangai
• mongolia
• nothospecies nova
• potentilla × vanzhilii
• tarbagatai range