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Abstract Detail

Systematics Section/ASPT

Krosnick , Shawn Elizabeth [1].

Revision of the West Indian Passiflora bilobata (Passifloraceae) species complex.

The Passiflora bilobata complex is a small lineage of ca. eight species distributed throughout Caribbean. This clade is recognized within subgenus Decaloba supersection Decaloba section Xerogona, a lineage that is characterized by the loss of extrafloral nectaries and reduced coronal banding. The P. bilobata complex is characterized by the presence of small flowers (generally > 3 cm), two series of coronal filaments, and bilobed leaves. Leaf morphology is highly variable in this group: within a single species, leaves may vary from deeply bilobed to shallowly truncate. There is also overlap in leaf morphology among closely related species. This variation has made identification difficult and resulted in the recognition of several names for the same taxon. In addition, a new species in this group was discovered at Parque Nacional Sierra de Bahoruco, Dominican Republic. The relationships among taxa in this complex will be reevaluated based on molecular and morphological evidence. In addition, age estimates and biogeographical patterns will be considered to identify environmental factors that may have contributed to the overall variation observed in this group.     

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1 - Tennessee Tech University, Dept. of Biology, 1100 North Dixie Avenue, Pennebaker Hall #207, Cookeville, TN, 38505, USA


Presentation Type: Oral Paper:Papers for Sections
Session: 18
Location: Salmon/Boise Centre
Date: Tuesday, July 29th, 2014
Time: 10:45 AM
Number: 18011
Abstract ID:914
Candidate for Awards:None

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