Research Paper

Begonia markiana (Begoniaceae), a new species from Lower Dibang Valley of Arunachal Pradesh, Northeast India

Momang Taram, Eric Wahlsteen, Dipankar Borah

Published on: 23 February 2022

Page: 165 - 170

DOI: 10.6165/tai.2022.67.165

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2022 vol.67 no.2 pp.165-170


The new species Begonia markiana is described and illustrated. It is similar to B. cathcartii but can easily be distinguished by a lamina with a dark central spot and a densely pilose upper surface in combination with a short dorsal capsule wing. A phylogenetic analysis based on three chloroplast regions placed the new species together with other continental species in section Platycentrum. Both morphology and molecular data suggest the new species as a member of the section Platycentrum.

Keyword: Begonia annulata, Begonia cathcartii, chloroplast DNA, ndhA, new species, ndhF-rpl32, phylogeny, Platycentrum