University of Georgia. Center for Invasive Species and Ecosystem Health.Provides state, county, point and GIS data. Maps can be downloaded and shared.
The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Hairy Whitetop.
USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.
Integrated Taxonomic Information System. Lepidium appelianum. [Accessed Sep 10, 2014].
Mulligan, G.A. and J.N. Findlay. 1974. The biology of Canadian weeds. 3. Cardaria draba, C. chalepensis, and C. pubescens. Canadian Journal of Plant Science 54(1):149-160.
Zouhar, K. 2004. Cardaria spp. In: Fire Effects Information System. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.