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Abstract Detail


Colloquium: The Utility of Pollen in Systematic and Morphological Studies: A Celebration of the Life of John J. Skvarla

Hoch, Peter C. [1], Skvarla, John J. [2].

Onagraceae Pollen: High-Value Morphological Data.

Pollen morphology provides particularly powerful phylogenetic information for the plant family Onagraceae. Two of the primary synapomorphies that mark the family as distinct within the order Myrtales are the paracrystalline beaded pollen ektexine and the highly characteristic viscin threads. For more than 30 years, John Skvarla and his collaborators have detailed the variation in Onagraceae pollen with precision and insight. The recent availability of a detailed molecular phylogeny and re-classification of the family provides an opportunity to reexamine this rich body of pollen data in a new context. Of particular interest is the interpretation of variation in pollen morphology, particularly viscin threads, in terms of the evolution of pollination biology in the family, and of its fossil record.


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1 - Missouri Botanical Garden, Po Box 299, St Louis, Missouri, 63166-0299, USA
2 - University of Oklahoma, Department of Botany and Microbiology, Norman, OK, 73019, USA

Keywords:
Pollen Grain Morphology
Onagraceae
viscin threads.

Presentation Type: Symposium or Colloquium Presentation
Session: C2
Location: Fort Camp Lounge/Gage
Date: Tuesday, July 29th, 2008
Time: 3:45 PM
Number: C2008
Abstract ID:412


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