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Abstract Detail



The flora of Madagascar: uncovering mechanisms for diversification

Gostel, Morgan [1], Funk, Vicki [2].

Where did you come from? Where did you go? A survey of the diversity of Compositae (Asteraceae) in Madagascar.

According to the Catalog of the Plants of Madagascar among the estimated 243 families of vascular plants in Madagascar, Compositae (Asteraceae) is one of the most diverse and highly endemic with approximately 540 species (88% of which are endemic) and 19 endemic genera. It is clear that Madagascar has played an important role in the evolutionary diversification of this family both locally and regionally. Despite the significant contribution of the family to the overall flora of Madagascar, with the exception of an excellent three-part treatment of Compositae (Asteraceae) by Humbert in the Flore de Madagascar et des Comores (1963), few studies have focused on this highly diverse and endemic component of the Malagasy flora. Here we present the Compositae (Asteraceae) as a model for understanding evolutionary mechanisms driving diversification in Madagascar. We highlight examples from case studies at the infratribal and infrageneric scales that reveal biogeographic connections between Madagascar and continental Africa and help identify drivers of diversity and endemism of this remarkable island flora.


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1 - Smithsonian Institution, Botany, PO Box 37012, David King Hall, MSN 5F2, Washington, DC, 20013, United States
2 - DEPT OF BOTANY-NHB 166, P.O. Box 37012, Washington, DC, 20013, United States

Keywords:
Africa
Biogeography
diversification
Endemism
Indian Ocean
Madagascar
Phylogenetics
Speciation.

Presentation Type: Colloquium Presentations
Session: C08, The flora of Madagascar: uncovering mechanisms for diversification
Location: 101/Mayo Civic Center
Date: Tuesday, July 24th, 2018
Time: 2:15 PM
Number: C08004
Abstract ID:935
Candidate for Awards:None


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