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The Plants of Pennsylvania
The manual includes keys to families, genera, and species; extensive diagnostic illustrations; scientific and common names; and data on distribution ranges, relative frequency, rare and endangered ...
The Vascular Flora of Pennsylvania
This volume is the first published product of the Pennsylvania Flora Database, created & maintained at the Morris Arboretum of the Univ. of Pennsylvania. The database has its roots in the work of E...
Concerns About the Floristic Quality Assesment
List of limitations of the floristic quality assessment method for evaluating the ecological value of a site through an analysis of its plant species composition.