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Abstract Detail

Systematics Section/ASPT

Rubite , Rosario Rivera [1], Hughes, Mark [2], Alejandro, Grecebio [3], Peng, Ching-I [4].

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

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. ¬† Conclusions: A natural classification for a much expanded Begonia sect. Baryandra has been provided. This paper highlights the feasibility of moving towards a natural classification of Asian Begonia step by step as information comes to light through building upon previous framework phylogenies with denser sampling.

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Related Links:

1 - University of the Philippines Manila, Department of Biology, Padre Faura St., Manila, Philippines, 1000
2 - Royal Botanic Garden Edinburgh, Edinburgh, Scotland
3 - University of Santo Tomas, Manila, Philippines
4 - Academia Sinica, Biodiversity Research Center, Taipei, Taiwan

Begonia†section Baryandra
ITS phylogeny.

Presentation Type: Oral Paper:Papers for Sections
Session: 18
Location: Salmon/Boise Centre
Date: Tuesday, July 29th, 2014
Time: 8:15 AM
Number: 18002
Abstract ID:52
Candidate for Awards:None

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