Council or Task Force
Fact Sheet: Hoary Cress (Jan 2014; PDF | 983 KB)
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act.
Federal Noxious Weed Disseminules of the U.S. - Fact Sheet: Cardaria pubescens
USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.
Invasive Plant Atlas of the United States - Hairy Whitetop
University of Georgia. Center for Invasive
Species and Ecosystem Health.
Hoary Cress Consortium
University of Idaho.
U.S. National Plant Germplasm System - Lepidium appelianum
USDA. ARS. National Genetic Resources Program. GRIN-Global.
Fire Effects Information System (FEIS) - Cardaria spp.
USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
PLANTS Database - Hairy Whitetop
USDA. NRCS. National Plant Data Center.
Encycloweedia: Data Sheet - Lepidium genus
California Department of Food and Agriculture.
Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources.
Weed Control in Natural Areas in the Western United States: Hoary Cress (Whitetop), Lens-Podded and Hairy Whitetop (2013; PDF | 252 KB)
University of California. Weed Research and Information Center.