Plant Databases

Best source for determining native vs introduced status, current nomenclature, and habitat for New York.  Maintained by the NY Flora Association.

A woody plant database with a dichotomous key, plant glossary, and "Plant selector". You can specify search criteria to determine which woody plants are best suited for your yard or garden.

The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. Includes images of most species, which may be copied with appropriate citation.