ibclogo XVI International Botanical Congess

Abstract Number: 2070
Poster No. = 756


Phylogeny, circumscription, and hybridization in Calopogon (Orchidaceae) as inferred from ITS sequence, AFLP, plastid restriction fragment, morphological and cytological data.


GOLDMAN, DOUGLAS H. (1), MARK W. CHASE (2), MICHAEL F. FAY (2), ROBERT K. JANSEN (1), ILIA J. LEITCH (2), and CASSIO VAN DEN BERG (2). (1) Department of Botany, University of Texas, Austin, TX 78713-7640, U.S.A., (2) Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, England.


Calopogon is a small genus of terrestrial orchids from eastern North America. Data were obtained for up to 197 plants and 72 populations, and several outgroup taxa. Sampling represents the morphological and geographic diversity of each taxon. There is general agreement among analyses at the species level, and all analyses place samples into their previously defined taxonomic groups, with the occasional exception of the varieties of C. tuberosus. The hexaploid C. oklahomensis is probably of hybrid origin, as supported by all data.

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