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Abstract Detail

Pteridological Section/AFS

Williams, Evelyn Webb [1], Farrar, Donald [2].

Hybridization histories in the Botrychium matricariifolium (Ophioglossaceae) complex.

The role of hybridization in speciation and diversification is increasingly apparent, nowhere more so than among pteridophytes. We describe the intriguing case of the allopolyploid Botrychium matricariifolium (Ophioglossaceae), a wide-spread and morphologically variable North American species complex. Previous work using morphometrics and Amplified Fragment Length Polymorphisms coincides with patterns of hybridization revealed using allozymes to suggest multiple hybridizations between Botrychium angustisegmentum and a species closely allied with Botrychium pallidum that created a hybrid swarm of confusing morphologies. We also demonstrate how these techniques can be used to delineate separate allopolyploid species such as Botrychium michiganense and identify putative parent species.

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1 - Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL, 60022, USA
2 - Iowa State University, Ecology, Evolution, and Organismal Biology, 251 Bessey Hall, Ames, IA, 50011, USA


Presentation Type: Oral Paper:Papers for Sections
Session: 10
Location: Salon 20/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 11:00 AM
Number: 10004
Abstract ID:258
Candidate for Awards:Edgar T. Wherry award

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