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Betula nigra @
American Museum of Natural History Entomology (1);
American Museum of Natural History, Plant Bug (7);
Blogger Bioblitz (3);
Systematic Mycology and Microbiology Laboratory (260);
Colorado State University, Thematic Collection Network (2);
Georgia Lichens (3);
Global Biodiversity Information Facility (294) [Missouri Botanical Garden (114); NMNH Botany Collections (53); NCSU_Darwincore (28); Botany Vascular Plant Collection (28); CONN (27); Herbarium (UNA) (20); Herbarium (12); Peabody Botany DiGIR Service (10); California State University, Chico (9); Fairchild Tropical Botanic Garden Virtual Herbarium Darwin Core format (9); Phanerogams herbarium specimens (6); Harvard University Herbaria (5); Herbarium of The New York Botanical Garden (4); University of British Columbia Herbarium (UBC) - Vascular Plant Collection (3); University of Copenhagen's Arboretum (2); Field Museum of Natural History (Botany) Seed Plant Collection (2); Herbarium of the Department of Natural Forests (Forest Research Institute) (2); Peabody Paleobotany DiGIR Service (2); Peabody Paleoportal DiGIR Service (PB) (2); USU-UTC Specimen Database (1); Bristol Regional Environmental Records Centre - BRERC October 2009 (1); Staffordshire Ecological Record - SER Site-based Surveys (1); Botany (UPS) (1); UAM Herbarium (ALA), Vascular Plant Collection (Arctos) (1); Marie-Victorin Herbarium (MT) (1); Botanical Society of the British Isles - Changing Flora of Glasgow 1982-2000 (1); Plantae, TAIF (Taiwan e-Learning and Digital Archives Program, TELDAP) (1); Natural History Museum, Vienna - Herbarium W (1); NatureServe Network Species Occurrence Data (1); Plant specimens depodited in Osaka Museum of Natural History, Japan. (1); Aranzadi Zientzi Elkartea (1); Bishop Museum Natural Sciences Data (1) accessed through the GBIF Data Portal. Each record tells when. See dataset links for citations & terms of use.];
Illinois Natural History Survey, Erythroneurini (7);
iNaturalist (883);
Ashley MacDonald (1);
David Voegtlin (1);
Hamilton, Enrico (1);
Marchman, Lauren (2);
Doll, Mary (4);
Olowojesiku, Ronke (1);
Perlmutter, Gary (9);
John Pickering, University of Georgia (22);
Steve Baskauf, Vanderbilt University (18);
Pollock, Sheryl (2);
Hattaway, Bobby (7);
Missouri Botanical Garden (45);
North Carolina State University, Insect Collection (65);
North Carolina State University, Insect Collection (179);
Warner Herbarium, Sam Houston State University (11);
University of Delaware, Thematic Collection Network (4);
Plants Database, United States Department of Agriculture (33);
Western Kentucky University (17)