Nomenclatural History
Cladothamnus campanulatusGreene,Erythraea3:65(1895). Described from Canada (British Columbia) and the USA (Washington State). Azaleastrum albiflorum (Hooker) Rydberg, Mem. New York Bot. Gard. 1:297 (1900). A. warreniiA. Nelson, Bot. Gaz. 56:67 (1913). Type: USA, Colorado, Jackson Co., Mt Zarkel, 14 vii 1911, Warren. R. warrenii(A. Nelson) Macbridc, Contr. Gray Herb n.s. 56:55(1918). Ic: Bot. Mag. 65, t 3670(1839).
