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Puccinellia rupestris, British alkali grass or stiff saltmarsh grass, is a European halophyte that has only been documented in North America between 1867 and 1880 from coastal zones of New Jersey, New York, and Pennsylvania. We documented Puccinellia rupestris from southern Ohio along an annually salted roadside habitat in 2007. Our collection represents the fourth United States record and the first vouchered report of this taxon from North America in 127 years. The stable population of this exotic grass demonstrates its ability to migrate inland from a coastal environment and become a newly established member the Ohio vascular flora. [ABSTRACT FROM AUTHOR]

A qualitative floristic survey of Wallace Woods, Linesville, Pennsylvania, was conducted during the growing seasons of 2005-2007. The 12.9 ha tract is situated in the western portion of Crawford County, within the Northwestern Glaciated Plateau Section of the Appalachian Plateaus Province. Wallace Woods has been the property of the Pymatuning Laboratory of Ecology through the University of Pittsburgh since 1962. Seven habitats were delineated within this site: 1) Upland Hemlock-Hardwoods Forest, 2) Elevated Alluvial Woodland Terrace, 3) Golden Saxifrage Woodland Seep, 4) Skunk Cabbage Swamp, 5) Alluvial Creek Floodplain, 6) Riparian Creekbank, Gravelbars, and Mudflats, and 7) Culturally Derived Ruderal Roadside. The vascular flora consisted of 384 specific and infraspecific taxa in 229 genera from 83 families. Eighty (20.8%) taxa were exotics. Plant division representation was one Equisetophyta, three Lycopodiophyta, 15 Polypodiophyta, two Pinophyta, and 363 Magnoliophyta (97 Liliopsida, 266 Magnoliopsida). The largest five families were the Asteraceae (40), Poaceae (37), Cyperaceae (32), Rosaceae (23), and Fabaceae (12). Twenty-one taxa (5.5%) were new records for Crawford County. [ABSTRACT FROM AUTHOR]