Issued August 2026

The Atlas provides distributional information for the 2,637 vascular plants spontaneously growing on Long Island (and its coastal islands), a region highly impacted by intensive and extensive urbanization.  For each taxon below the rank of genus (i.e., species, subspecies, varieties, and hybrids), a distribution map is provided showing historical and recent records based on herbarium collections and observations.  The vascular flora of Long Island comprises 166 families, 863 genera, and 2,405 species, plus 127 additional infraspecific taxa and 105 hybrids for a total of 2,637 taxa below genus.  Taxonomy, nomenclature, and native status essentially follow Werier (2017).

The Atlas is useful to amateur and professional botanists, students, conservationists, land use planners, gardeners, historians, naturalists, and nature lovers in general.  The Atlas tells a story of the history of plants on Long Island, no natural history library should be without a copy.