| Abstract Detail
Systematics Section / ASPT Mavrodiev, Evgeny V. [1], Soltis, Pamela S. [2], Soltis, Douglas E. [3]. rDNA and plastid sequence data suggest that the genus Rohrbachia is sister to Typha s. str. The genus Rohrbachia (Kronf. ex Riedl.) Mavrodiev (3 species) was described based on Typha subsect. Rohrbachia. To determine if Rohrbachia is separate from the rest of Typha, we investigated rDNA (ITS) and plastid (atpB-rbcL spacer) sequence data from R. minima and R. alekseevii, as well as sequences representing 13 species and hybrids of Typha; we used species of Sparganium (Sparganiaceae), Guzmania (Bromelliaceae), and Tillandsia (Bromelliaceae) as outgroups. Representatives of all four treated sections of Typha s. l. were included in the analysis. Our atpB-rbcL spacer and ITS sequence data suggest that the genus Rohrbachia is sister to Typha s. str. and may be therefore accepted as an independent taxon. Current molecular data, combined with morphological evidence, argue against the treatment of Rohrbachia at the rank of section and suggest, instead, generic status.
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1 - University of Florida, Department of Botany, Florida Museum of Natural History, P.O. Box 117800, Gainesville, Florida, 32611-7800, USA
2 - University of Florida, Florida Museum of Natural History, PO Box 117800, Gainesville, FL, 32611-7800, USA
3 - University of Florida, Department of Botany, 220 Bartram Hall, P.O. Box 118526, Gainesville, Florida, 32611-8526, USA
Keywords:
Typha
Rohrbachia
Typhaceae
ITS sequence data
plastid sequence data.
Presentation Type: Poster:Posters for Sections
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P59067
Abstract ID:1940 |
