Publication: Sp. Pl. 2: 865. 1753.
Origin: Introduced from Eurasia
Herbarium search: CPNWH
Notes: FNA20: "Flowering heads of Tussilago farfara close at night (laminae of ray corollas arch and roll inward). The species is becoming an invasive weed in some areas."
Last updated 11/28/2020 by David Giblin.