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Abstract Detail


Systematics Section / ASPT

Gillespie, Emily [1], Kron, Kathleen A. [1].

Multi-Gene Phylogenetic Analysis of the Genus Kalmia (Ericaceae: Phyllodoceae) with emphasis on the disjunct Cuban endemic, Kalmia ericoides.

The genus Kalmia (incl. Leiophyllum buxifolium and Loiseleuria procumbens) is comprised of 9-11 species distributed across much of North America, in eastern Asia and in Cuba. Members of the genus are found in a variety of habitats, including wet coastal pinelands, pocosins, pine savannahs, rock outcrops, dry sandhills, bogs, fens and alpine meadows. Kalmia includes widepread species, narrow endemics, disjunct species and circumboreal species. Despite the recognizability of Kalmia and its horticultural and ethnobotanical interest, the evolutionary relationships within the genus remain unclear. The current study represents the first cladistic analysis of the entire genus. Phylogenetic utility was evaluated for eight nuclear and chloroplast DNA regions, including nrITS, GBSS-1 (waxy), LEAFY, rpb2, matK, rbcL, ndhF and trnS-G intergenic spacer. Relationships among Kalmia species are discussed along with interpretation of morphological evolution and historical biogeography. Relative utility of Maximum Parsimony, Maximum Likelihood and Bayesian Inference, as well as aspects of molecular evolution, are examined. More broadly, the position of Kalmia within the taxonomically challenging tribe Phyllodoceae and the subfamily Ericoideae is addressed.


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1 - Wake Forest University, Department of Biology, PO Box 7325, 226 Winston Hall, Winston-Salem, North Carolina, 27109-7325, USA

Keywords:
Kalmia
Phyllodoceae
Ericaceae
Leiophyllum
Loiseleuria
Kalmia ericoides
molecular phylogeny
Biogeography
LEAFY.

Presentation Type: Oral Paper:Papers for Sections
Session: CP05
Location: Lake Erie/Hilton
Date: Monday, July 9th, 2007
Time: 9:15 AM
Number: CP05006
Abstract ID:2155


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