New York Flora Association
an organization dedicated to the promotion of field botany and greater understanding of the plants that grow in the wild in New York State.website: http://www.nyflora.org/
blog: http://nyflora.wordpress.com/
NY Flora Atlas: http://www.newyork.plantatlas.usf.edu/Default.aspx
USDA PLANTS Database
The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.
Google Map of New York Plant Lists
This is a map of New York that marks places that have a plant list available.
Adirondack Botanical Society 