Developmental and Structural Section
Carlsward, Barbara S. , Neubig, K. M. .
Vegetative anatomy of Sobralieae (Orchidaceae).
Sobralieae comprise a heterogeneous assemblage of approximately 219 species that has been difficult to taxonomically describe. Plants range in habit from terrestrial to epiphytic and they occur throughout Central and South America as well as the Caribbean. Flowers vary tremendously in size (5 mm to 12 cm in diameter), are generally membranous in texture, and can be resupinate or nonresupinate. As part of a larger phylogenetic study, we examined the vegetative anatomy of leaves, stems, and roots for 20 species in all four of the genera currently included in the tribe: Elleanthus, Epilyna, Sertifera, and Sobralia in hopes of finding structural characters that might help in morphologically diagnosing these four genera and their subgroups. Leaves proved to have the most variable anatomy, while stems and root structure was much more homogeneous across species.
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1 - Eastern Illinois University, Department of Biological Sciences, 600 Lincoln Avenue, Charleston, Illinois, 61920-3099, USA
2 - University of Florida, Department of Biology, 220 Bartram Hall, P.O. Box 118526, Gainesville, FL, 32611-8526, USA
Presentation Type: Poster:Posters for Sections
Location: Hall A/Convention Center
Date: Monday, August 2nd, 2010
Time: 5:30 PM