Recircumscription of Begonia sect. Baryandra (Begoniaceae): evidence from molecular data.

ABSTRACT:

Background

Begonia sect. Diploclinium is a 'dust-bin' section for species retaining pleisiomorphic characters and lacking novel synapomorphic characters used to delimit other Asian sections in Begonia. Part of this large and polymorphous section is transferred to Begonia sect. Baryandra in a move towards a more natural classification for the genus.

Results

Phylogenetic analysis of nuclear ribosomal ITS DNA sequences show a strongly supported monophyletic group containing Philippine and Bornean species previously in Begonia sect. Diploclinium, and the type of Begonia sect. Baryandra, B. oxysperma. This clade forms the basis for the now much-expanded Begonia sect. Baryandra, which as defined here contains 49 species and has its centre of diversity in the Philippines.

Conclu

SUBMITTER: Rubite RR 

PROVIDER: S-EPMC5432953 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature