Egre Prairie

Egre Prairie is an isolated and beautiful prairie growing in a nine-acre plot on a Glacial Drumlin in eastern Dane County, Wisconsin. All the species pictured in this book are from that prairie. The 121 documented species include 37 plant families with the number of species per family listed in parenthesis: Asteraceae (36 species), Poaceae (14), Fabaceae (12), Rosaceae (8), Brassicaceae (4), Lamiaceae (4), Gentianaceae (3), Ranunculaceae (3), Amaranthaceae (2), Asclepiaceae (2), Asparagaceae (2), Boraginaceae (2), Caryophyllaceae (2), Cyperaceae (2), Polygonaceae (2), Solanaceae (2), Violaceae (2), and the following families with only one species per family: Adoxaceae, Anacardiaceae, Apiaceae, Caprifoliaceae, Celastraceae, Clusiaceae, Commelinaceae, Eleagnaceae, Euphorbiaceae, Iridaceae, Linaceae, Lobiaceae, Malvaceae, Onagraceae, Oxalidaceae, Primulaceae, Salicaceae, Scrophulariaceae, Verbenaceae, Vitaceae. Eighteen genera have two or more species per genus: Symphyotrichum (6 species), Trifolium (5), Gentiana (3), Solidago (4), Ambrosia (2), Anemone (2), Asclepias (2), Carduus (2), Carex (2), Geum (2), Helianthus (2), Liatris (2), Lithospermum (2), Melilotus (2), Rosa (2), Rumex (2), Setaria (2), Viola (2). Seventy-seven of these 121 species (63%) are native to the United States and the remaining 45 species (38%) are introduced from other countries.