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Abstract Detail


Allison, Lucy [1], Roalson, Eric H. [2].

Diversification of seed traits in the Cleomaceae.

M. Lucy Allison and Eric H. Roalson
School of Biological Sciences
Washington State University
Pullman, Washington 99164-4236
Seeds contain clues about a plant’s life history from survival and dispersal strategies to its ecological niche. Seed morphology is diverse across angiosperms and investigations of seed characters can be used to understand character changes across the phylogeny and provide potential synapomorphies for clades. Here we look at Cleomaceae, a small pan-tropical flowering plant family currently under systematic revision with a recognized ~18 genera and 200+ species. Cleomaceae seeds show diverse surface features that can help differentiate lineages. The seeds of Cleomaceae are commonly reniform with a deep invagination and arils present in some species. Primary and secondary seed coat characters of 18 genera and 150 species were investigated with scanning electron microscopy (SEM) and compared to recent phylogenetic studies to look at patterns of seed character changes across the phylogeny. We found characters that help define clades to include variation in primary sculpture (reticulate, undulous with ridges, rugose, foveate, papillate, or flat) and secondary sculpture (rugose, foveolate, tuberculate, glaucous, and micropapillate). Presence of seed hairs, hair shape and density, and the presence of arils are also significant for delineating genera.

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1 - Washington State University, School of Biological Sciences, PO Box 644236, Pullman, WA, 99164-4236, USA
2 - Washington State University, School Of Biological Sciences, Abelson Hall 339, Pullman, WA, 99164-4236, USA


Presentation Type: Poster
Session: P, Systematics
Location: Exhibit Hall/Omni Hotel
Date: Monday, June 26th, 2017
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PSY007
Abstract ID:295
Candidate for Awards:None

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