

Pyrrocoma rigida Rydb.Annotated by Alan Mayes, 1976.
Idaho: Kootenai: Granite Station.
48.010459° N, 116.670476° W,
Datum: WGS84. Coordinate Source: GeoLocate. Invalid coordinates (located outside county bounds).
Sandy places. Isotype. Bulletin of the Torrey Botanical Club 27: 624, 1900. Now considered a synonym of Pyrrocoma carthamoides var. carthamoides. Https://intermountainbiota.org/portal/collections/individual/index.php?occid=30825822. Phenology: flowering.
Isotype.J.H. Sandberg; D. T. MacDougal 785, Jul 29, 1892
With A. A. Heller
WS, Catalog: 74692, WS000417