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Ericameria nauseosa var. leiosperma
(A. Gray) G.L. Nesom & Baird
Family:
Asteraceae
rubber rabbitbrush
[
Chrysothamnus nauseosus ssp. leiospermus
(Gray) Hall & Clements,
more
Chrysothamnus nauseosus var. abbreviatus
(M.E. Jones) Blake,
Chrysothamnus nauseosus var. leiospermus
(Gray) Hall
]
Max Licher
Flora of North America
Resources
Lowell E. Urbatsch, Loran C. Anderson, Roland P. Roberts, Kurt M. Neubig in Flora of North America (vol. 20)
Plants
25-60 cm.
Stems
yellowish green, often leafless at flowering, densely, compactly tomentose.
Leaves
yellowish green; blades 1-nerved, filiform, 10-30 × 0.8-1 mm, faces glabrate
. Involucres
8-11.5 mm.
Phyllaries
17-31, apices erect, acute to obtuse, abaxial faces glabrous.
Corollas
5-8.5 mm, tubes mostly glabrous, lobes 0.5-1.1 mm (erect to incurved), glabrous; style appendages longer than stigmatic portions.
Cypselae
glabrous;
pappi
3-6.6 mm.
2n
= 18. Flowering late summer-fall. Gravelly and sandy soils, rocky crevices; 700-2800 m; Ariz., Calif., Colo., Nev., Utah.
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