NEW COMBINATIONS, RANK CHANGES, AND NOMENCLATURAL AND TAXONOMIC COMMENTS IN THE VASCULAR FLORA OF THE SOUTHEASTERN UNITED STATES. IV 1Alan S. Weakley, 2Bruce A. Sorrie, 3Richard J. LeBlond, 4Derick B. Poindexter UNC Herbarium (NCU), North Carolina Botanical Garden, Campus Box 3280, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3280, U.S.A.
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[email protected] 5Aaron J. Floden 6Edward E. Schilling Missouri Botanical Garden (MO) Dept. of Ecology & Evolutionary Biology (TENN) 4344 Shaw Blvd. University of Tennessee Saint Louis, Missouri 63110, U.S.A. Knoxville, Tennessee 37996 U.S.A.
[email protected] [email protected] 7Alan R. Franck 8John C. Kees Dept. of Biological Sciences, OE 167 St. Andrew’s Episcopal School Florida International University, 11200 SW 8th St. 370 Old Agency Road Miami, Florida 33199, U.S.A. Ridgeland, Mississippi 39157, U.S.A.
[email protected] [email protected] ABSTRACT As part of ongoing efforts to understand and document the flora of the southeastern United States, we propose a number of taxonomic changes and report a distributional record. In Rhynchospora (Cyperaceae), we elevate the well-marked R. glomerata var. angusta to species rank. In Dryopteris (Dryopteridaceae), we report a state distributional record for Mississippi for D. celsa, filling a range gap. In Oenothera (Onagraceae), we continue the reassessment of the Oenothera fruticosa complex and elevate O. fruticosa var. unguiculata to species rank. In Eragrostis (Poaceae), we address typification issues. In the Trilliaceae, Trillium undulatum is transferred to Trillidium, providing a better correlation of taxonomy with our current phylogenetic understanding of the family.