Date of Award

2007

Document Type

Thesis

Degree Name

Master of Biological Science (MBioSci)

Department

Biology

First Advisor

James H. Peck, PH.D.

Abstract

The vascular flora of Saline County, Arkansas was collected from March 2002 to November 2007 resulting in a total of 1,510 taxa (52% of the known flora of Arkansas), representing 165 families, 617 genera, and 1,457 species. Of these, 241 (15.9%) are non-native and 99 (6.6%) are of state conservation concern. Of these, 20 taxa (1.3%) are considered to be of global conservation concern (G1-G3). Twenty-seven habitats and plant communities are qualitatively described from the county. Of these, shale barrens, igneous glades, pine flatwoods, swamp lakes and floatant marshes, channel scar depression ponds, high-gradient stream channels, and bluffs and talus were found to be important to species richness and rare species. One species, Sabatia arkansana, was described as new-to-science from the study area in 2005 and is endemic to Saline County. Four taxa: Hypericum adpressum, Cyperus difformis, C. lupulinus ssp. macilentus, and Kyllinga brevifolia are new state records.

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