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Native Plant Societies of the Western United States

Arizona
California
Colorado
Montana
Nevada
New Mexico
Oregon
Utah
Washington
Wyoming
Kinnikinnick Native Plant Society

Information about Rare Plants in Idaho

Idaho Natural Heritage Program
Field Guide to the Special Status Plants of the Bureau of Land Management Lower Snake River District (No longer a free download.)
Endangered Species Program, US Fish & Wildlife Service

Landscaping

Landscaping with Native Plants of the Intermountain Region
Native Gardening and Invasive Plants Guide - New from the National Wildlife Federation, habitat guide, plant finder and more...

Organizations and Agencies in Idaho

The Idaho Academy of Science
US Forest Service -- Intermountain Region
Bureau of Land Management--Idaho

National Organizations

The Lady Bird Johnson Wildflower Center
National Plant Conservation Alliance
North American Native Plant Society

Noxious Weeds

Idaho Noxious Weed List -- includes photos and descriptive information.
USDA APHIS Plant Protection and Quarantine Noxious Weeds
INVADERS Database
Federal Interagency Committee for the Management of Noxious and Exotic Weeds
Weed Science Society of America
Bureau of Land Management Invasive Weed Information
Weeds Gone Wild -- Alien Plant Invaders of Natural Areas
Tamarisk in Idaho

Botanical Databases

Flora ID Northwest
National PLANTS Database

Regional Herbaria

Ray J. Davis Herbarium, Idaho State University, Pocatello, Idaho
Stillinger Herbarium, University of Idaho, Moscow, Idaho
The Lewis & Clark Herbarium
The Intermountain Herbarium
Rocky Mountain Herbarium
Oregon State University Herbarium, Corvallis, Oregon
University and Jepson Herbaria, University of California, Berkeley
The Marion Ownbey Herbarium, Washington State University, Pullman, WA
University of Washington Herbarium, Seattle
Whitman College Herbarium, Walla Walla, WA

Journals

Native Plants Journal