Abstract Detail

Systematics

Bleich, Andrew [1], Trauth-Nare, Amy [2], Abbott, J. Richard [3], Naczi, Robert [3], Neubig, Kurt Maximillian [1].

Are there cryptic species in the North American Seneca snakeroot, Polygala senega (Polygalaceae)?

Polygala senega (Polygalaceae), native to the United States and southern Canada, is perhaps the most economically important member of its family, with roots that are commercially valuable for medical compounds. Over-harvesting of wild plants is likely a factor contributing to decline in at least parts of its range. Previous systematic study using morphological data have suggested two species comprise what is currently recognized as P. senega. To test this hypothesis using molecular data, we have sampled more than 30 individuals of Polygala senega across its geographic range, sequencing both nrITS and several plastid loci. Preliminary results show that there are two sister clades within what is being called Polygala senega. Further research is necessary to determine if these clades are supported with additional sampling and if they correspond to the morphologic entities previously often treated as two varieties: P. senega var. latifolia and var. senega. If so, these lineages are, perhaps, better recognized as species. The implications for conservation of this economically important species also need to be resolved (e.g., Have we been underestimating biodiversity in this lineage?) and if there really are two separate, morphologically distinctive lineages, which one(s) might be of local conservation concern.

1 - Southern Illinois University Carbondale, Plant Biology, Carbondale, IL, 62901, USA
2 - University of Delaware, Professional Development Center for Educators, Newark, DE, 19717, USA
3 - The New York Botanical Garden, Bronx, NY, 10458, USA

Keywords:
Species complex.

Presentation Type: Poster
Session: P, Systematics Section/ASPT Posters
Location: Exhibit Hall/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
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: PSY025
Abstract ID:398
Candidate for Awards:None