Publication: Fl. Helv. 3: 245. 1828.
Origin: Native
Herbarium search: CPNWH
Notes: See FNA Volume 5 for extensive description of C. arvense ssp. strictum regarding plasticity of growth, distribution, and lack of interfertility with C. arvense ssp. arvense, and C. beeringianum.
Last updated 5/23/2020 by David Giblin.