>004. Proceedings of the Indiana Academy of Science 113(1 ): 1-6 ADDITIONS TO THE FLORA OF GINN WOODS, DELAWARE COUNTY, INDIANA Donald G. Ruch 1 , Chris R. Reidy, Byron G. Torke and Kemuel S. Badger: Department of Biology, Ball State University, Muncie, Indiana 47306-0440 USA Paul E. Rothrock: Randall Environmental Center, Taylor University, Upland. Indiana 46989-1001 USA ABSTRACT. Ginn Woods, a typical flatwoods of the Bluffton Till Plain Section of the Central Till Plain Natural Region, is a 65 ha tract of woodland owned by Ball State University. The woods lies in the northwest corner of Delaware County, Indiana. This paper documents 69 additional vascular taxa. repre- senting 44 genera in 23 families, within Ginn Woods. Of the 69 species, 38 are recorded for the first time in Delaware County and nine are naturalized, non-native (exotic) species. The results of this studs com- bined with the one conducted in 1997 provided the following information. Ginn Woods contains a total of 452 taxa of vascular plants representing 267 genera in 99 families. A total of 164 species were reported for the first time from Delaware County. Of the 436 angiosperms listed, 67. or approximately 15 c f. were non-native or exotic species. The flora of Ginn Woods is characteristic of a typical old-grow th beech- maple forest in the American Midwest. The species documented at Ginn Woods were compared to the inventories of four other forests in east-central Indiana, e.g., Botany Glen, Grant County, Fogwell Forest Nature Preserve, Allen County, Mounds State Park, Madison County, and Wilbur Wright Fish and Wildlife Area, Henry County. This comparison indicated that Ginn Woods contained 17 species not found in these other forests. Among others, this list includes Agastache scrophulariaefolia, Aristolochia serpentaria, Carya laciniosa, Hamamelis virginiana, Hybanthus concolor, Ilex verticillata, Lobelia cardinalis, Huper- zia lucidula, Lycopus virginicus, Triosteum aurantiacum, Triphora tricmthophora, and Uhints thoniasii. Keywords: County records—vascular plants, Delaware County flora, Indiana vascular plant records, flatwood forest Ginn Woods is a 65 ha tract of woodland owned by Ball State University and managed by the Field Center and Environmental Edu- cation Center. The site is located approxi- mately 25 km north of Muncie, Indiana (SW 1/4 Sec. 18, and NW 1/4, Sec. 19, T22N, R10E: Wheeling Quadrangle 7.5 Minute Se- ries Topographic Map). Ginn Woods is a typ- ical flatwoods of the Bluffton Till Plain Sec- tion of the Central Till Plain Natural Region, an area formerly covered by an extensive beech-maple forest (Homoya et al. 1985). The soils in Ginn Woods are derived from glacial parent material and vary from somewhat poor- ly to very poorly drained soils (Huffman 1972). The poor internal drainage of these soils, combined with the seasonally high water table less than 40 cm below the surface for most of the study area, results in ponding on the low-lying portions of the woods through early to mid-summer (McClain 1985). The vegetation of Ginn Woods has been de- scribed previously. After analyzing the struc- ture and composition of the woody vegetation of the woods. Badger et al. (1998) provided evidence that Ginn Woods was an old-grow th forest and ranked as the second largest old- growth forest in Indiana. In addition to de- scribing the vegetational communities, Ruch et al. (1998) published a list o( the vascular flora of Ginn Woods. The flora consisted of 384 species of vascular plants, representing 244 genera and 94 families. Of the total num- ber of species. 127 were Delaware Count) re- cords and 58 were exotic, non-native species. Careful examination oi the list of vascular plants from the stud) area reveals that, al- though the wood\ plants, vines, and forbs were adequately documented, records for members o( the Poaceae, Cyperaceae, and Juncaceae arc minimal. Onl) 13 grass species. 22 sedge species. l c ) from the genus Carex, and one Juncus species were reported. Al- though this stud) was undertaken primaril) to