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The Slippery Rock University Herbarium (SLRO) was founded in approximately 1930. Located in Vincent Science Center 123, the herbarium houses approximately 17,000 specimens. About one-half of these collections are from Pennsylvania, the remainder from continental North America. Included among these collections are representative specimens of the campus flora. Access to, or requests for the loan of specimens must be made through the curator, Jerry G. Chmielewski. Slippery Rock University Herbarium, Department of Biology, Slippery Rock University, Slippery Rock, PA 16057; phone: (724) 738-2489; email: