General Botanical Information, Plant Identification
GardenWeb Glossary of Botanical Terms USDA Plant Database - so much information!
Oregon State University, LANDSCAPE PLANTS NC State-Horticultural Trees
Search the VT Dendrology Database
Plant Identification Books
Newcomb's Wildflower Guide - Awesome book! Wildflowers of the Field and Forest
Wildflowers of North America - puts a lot of identification power in your pocket!
Illustrated Guide to Trees and Shrubs - Best serious, technical key to trees and shrubs.
Peterson Guide to Trees and Shrubs - a must have!
Two very handy guides from the NJ DEP - 1 for trees; 1 for shrubs and vines. Only $10 each!
Invasive Plants: A Guide to Identification, Impacts...
Dave Howe's Guide to the Invasive Plants of the Trails Project
Exotic, Introduced, or Invasive Plants or Animals
Excellent for discerning invasive plants from native plants in our region:Mistaken Identity? Invasive Plants and their Native Look-alikes
Invasive Plants: Weeds of the Global Garden - neat book from the Brooklyn Botanic Garden!
Invasive.org, and invasive.org/eastern - information and images.
The Global Invasive Species Database - check it out!
TNC Invasive Species Initiative page
Invasive and Exotic Insects, Diseases, and Weeds Information and Images
National Invasive Species Information Center
Exotic Plants (and Others) by State or Region
New York
The Invasive Plant Council of NYS NYFA New York Flora Atlas
Pennsylvania
Invasive Exotic Plants In Pennsylvania List
PCA Alien Plant Working Group - Mid-Atlantic List (Complete A-Z)
New England
Welcome to IPANE IPANE - Search the Catalog of Species
Virginia Wisconsin
VA NHP Invasive Alien Plants List Invasive Plants of Northeastern Wisconsin
Microstegium
The Invasive Plant Council of NYS
Mile-a-minute vine
The Invasive Plant Council of NYS
Maples
N American Maple Syrup Producers Manual, Bulletin 856-96
http://www.massmaple.org/treeID.html
Ailanthus
Ontario Trees & Shrubs - Ailanthus & Staghorn Sumac
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