Hymenoxys richardsonii (Hook.) Ckll., det. by K. F. Parker 1949. Originally ID as Hymenoxys macrantha. Det. by T. D. A. Cockerell. See Bull. Torr. Bot. Club, Sept. 1904, p. 476. Picradenia richardonii Hooker var. richardsonii on typed note.
For additional information about this specimen, please contact: J Ryan Allen, Biodiversity Informatics Manager (Database inquiries) (james.r.allen@colorado.edu)