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Abstract Detail

Systematics Section/ASPT

Abbott, J. Richard [1], Neubig, Kurt [2], Carlsward, Barbara [3].

Further insight into the disintegration of the polyphyletic mess that was Polygala s.l. (Polygalaceae).

It has been shown that all 13 traditionally recognized genera of Polygalaceae subfamily Polygaloideae (= tribe Polygaleae) are phylogenetically nested within Polygala s.l. All of the traditional subgenera of Polygala are monophyletic and all but one are more closely related to other genera than they are to the type-bearing clade of Polygala s.str. Thus, the disintegration of traditional Polygala s.l. is inevitable from the perspective of monophyly, especially since there is no added informational value to expanding Polygala to include all other genera in the subfamily. New World endemic genera of Polygaloideae are Acanthocladus, Asemeia, Badiera, Bredemeyera, Caamembeca, Gymnospora, Hebecarpa, Monnina, Phlebotaenia, and Rhinotropis. Polygala, Polygaloides, and Securidaca are found in both the New World and Old World. Old World endemic genera of Polygaloideae are Chodatia (not yet tranferred to generic rank), Comesperma, Epirixanthes, Heterosamara, Muraltia (incl. Nylandtia), and Salomonia. New World Polygala are not always clade-forming with Old World Polygala, but the infrageneric relationships are not robustly resolved, so treating the New World taxa as a new genus or proposing a subgeneric classification would be premature. For now, it seems best to recognize 18 morphologically diagnosable clades as genera within the Polygaloideae.

Broader Impacts:

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1 - Missouri Botanical Garden, St. Louis, MO, 63110, USA
2 - University of Florida, Florida Museum of Natural History, Gainesville, FL, 32611, USA
3 - Eastern Illinois University, Department of Botany, Life Sciences Bldg. 2070, 600 Lincoln Ave., Charleston, IL, 61920, USA


Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PSY025
Abstract ID:663
Candidate for Awards:None

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