Fact Sheet: Yellow Toadflax (Jan 2014; PDF | 448 KB)
Alberta Invasive Plants Council (Canada).
Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Yellow Toadflax (Mar 19, 2011; PDF | 412 KB)
University of Alaska - Anchorage. Alaska Center for Conservation Science.
See also: Non-Native Plant Species List for additional factsheets (species biographies) and species risk assessment reports of non-native species present in Alaska and also non-native species currently not recorded in Alaska (potential invasives).
Invasive Plant Atlas of the United States - Yellow
University of Georgia. Center for Invasive
Species and Ecosystem Health.
Global Invasive Species Database - Linaria vulgaris (herb)
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Germplasm Resources Information Network (GRIN) - Linaria vulgaris
USDA. ARS. National Genetic Resources Program.
Fire Effects Information System (FEIS) - Linaria spp.
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
PLANTS Database - Butter and Eggs
USDA. NRCS. National Plant Data Center.
Encycloweedia: Data Sheet - Linaria genus
California Department of Food and Agriculture.
Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources.
Noxious Weed Species - Yellow & Hybrid Toadflax
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Yellow-Toadflax: Options for Control (PDF | 573 KB)
Lincoln County Noxious Weed Control Board (Washington).
Weed Control in Natural Areas in the Western United States: Yellow Toadflax (2013; PDF | 206 KB)
University of California. Weed Research and Information Center.
Biology and Management of the Toadflaxes
Colorado State University. Extension.
Yellow Toadflax - Weed Factsheet (PDF | 160 KB)
New Mexico State University.
Dalmatian Toadflax and Yellow Toadflax: Identification and Control (PDF | 199 KB)
North Dakota State University. Extension Service.
Ohio Perennial & Biennial Weed Guide - Yellow Toadflax
Ohio State University. Ohio Agricultural Research and Development Center.
Invasive Species Management in South Dakota - Yellow and Dalmatian Toadflax (Feb 2007; PDF | 419 KB)
South Dakota State University.
Noxious Weed Information - Yellow Toadflax (B List)
Colorado Weed Management Association.
and Biological Control of Dalmatian and Yellow
Toadflax (2005; PDF | 3 MB)
Weed Identification - Yellow
Montana Weed Control Association.