Compositae source details
(1906). Flora of Colorado
317723
1906
Publication
Date
action
by
Carduus truncatus Greene ex Rydb. (original description)
Chrysopsis arida A.Nelson ex Rydb. accepted as Heterotheca villosa var. minor (Hook.) Semple (original description)
Chrysopsis arida A.Nelson ex Rydb. accepted as Heterotheca villosa var. minor (Hook.) Semple (original description)
