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Abstract Detail

Systematics Section/ASPT

Aygoren Uluer, Deniz [1], Forest, Felix [2], Hawkins, Julie [1].

Evolution of papilionate flowers in the Fabales.

Papilionate flowers are monosymmetric flowers with characteristic keels that are formed by petal fusion and enclose the reproductive organs. Our study takes a phylogenetic approach to thoroughly characterise the apparently convergent evolution of papilionate flowers in order Fabales. In Fabales papilionate flowers characterise clades in two species-rich families, Leguminosae (subfamily Papilionoideae) and Polygalaceae (tribe Polygaleae). We consider whether the papilionate flowers of one clade evolved in an environment where papilionate flowers of the other were already found, and if the earliest-evolving flowers in the second clade were similar in size and presentation to the Papilionate flowers extant at that time. If this is the case, then we might expect a benefit to the second clade of “mimicking” the complex flowers of the first. Here we present the results of molecular dating, ancestral area, ancestral state and diversification rates analyses. We discuss the phylogenetic conditions that would need to be met for convergent evolution to be considered possible mimicry, and whether these conditions are met in the case of papilionate flowers of the Fabales.

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1 - University Of Reading, School of Biological Sciences, Reading, RG66AS, UK
2 - Royal Botanic Gardens, Kew, Jodrell Laboratory, Richmond, Surrey, TW9 3DS, UK

papilionate flowers

Presentation Type: Oral Paper:Papers for Sections
Session: 5
Location: Salon 9/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 9:30 AM
Number: 5007
Abstract ID:989
Candidate for Awards:None


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