All Floras      Advanced Search
FNA Vol. 20 Page 62, 63, 64, 66, 67, 68 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 20 | Asteraceae | Ericameria

21o. Ericameria nauseosa (Pallas ex Pursh) G. L. Nesom & G. I. Baird var. oreophila (A. Nelson) G. L. Nesom & G. I. Baird, Phytologia. 78: 64. 1995.

Great Basin rabbitbrush

Chrysothamnus oreophilus A. Nelson, Bot. Gaz. 28: 375. 1900; C. nauseosus (Pallas ex Pursh) Britton var. artus (A. Nelson) Cronquist; C. nauseosus subsp. consimilis (Greene) H. M. Hall & Clements; C. nauseosus var. consimilis (Greene) H. M. Hall; C. oreophilus var. artus A. Nelson; Ericameria nauseosa var. arta (A. Nelson) G. L. Nesom & G. I. Baird; E. nauseosa subsp. consimilis (Greene) G. L. Nesom & G. I. Baird

Plants 70–250 cm. Stems greenish, usually leafy, compactly tomentose . Leaves yellowish green; blades 1-nerved, filiform to linear, 20–50 × 0.8–1 mm, faces glabrate. Involucres 6.5–10 mm. Phyllaries 11–20, apices erect , acute, glabrous. Corollas 6–9 mm, tubes glabrous, lobes 1.5–2.5 mm, glabrous; style appendages shorter than or equaling stigmatic portions. Cypselae hairy (sometimes glabrous in Idaho populations); pappi 4.2–7.6 mm. 2n = 18 (as Chrysothamnus nauseosus subsp. consimilis).

Flowering late summer–fall. Alkaline valleys and plains; 1200–3000 m; Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wyo.; Mexico (Baja California).

The names Chrysothamnus nauseosus subsp. consimilis and var. consimilis (Ericameria nauseosa subsp. consimilis) have been used for this taxon; an equivalent combination has not been made at the varietal level in Ericameria. Variety oreophila intergrades with vars. mohavensis and speciosa.


Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |