Heterotheca ruthii (Small) Harms is a herbaceous perennial (Small, 1897) which is currently on the Smithsonian Institution’s (1975) list of species proposed for inclusion on the federal endangered species list.
Heterotheca ruthii (Small) Harms is a herbaceous perennial (Small, 1897) which is currently on the Smithsonian Institution’s (1975) list of species proposed for inclusion on the federal endangered species list.