Rubber Rabbitbrush - Ericameria nauseosa var. speciosa
Chrysothamnus nauseosus ssp. albicaulis
MNPS Threat Rank
See species description.
Variety speciosa can be distinguised from the others by the following characters: involucre 8-14 mm long, whitish-tomentose at least at the base; corollas 9-13 mm long, usually puberulent (rarely arachnose) (Urbatsch et al., 2003, Fl. North America, Vol. 20; Lesica 2012).
BC to MB south to ID, AZ, NM and TX (Kartesz 2009).
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.