Ericameria nauseosa var. juncea
Ericameria nauseosa var. psilocarpa
rush rabbitbrush
smooth-fruit rabbitbrush
yellowish green, usually leafless at flowering, compactly tomentose.
yellowish green, leafy, compactly tomentose.
yellowish green;
blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces compactly tomentose.
yellowish green;
blades 1-nerved, narrowly oblanceolate, 30–70 × 1–2 mm, faces glabrate.
9.5–12 mm.
8.5–12.2 mm.
7–8.5 mm, tubes hairy, lobes 0.7–0.9 mm, villous;
style appendages longer than stigmatic portions.
8.6–9.6 mm, tubes sparsely hairy, lobes 1.3–1.5 mm, glabrous;
style appendages slightly longer than stigmatic portions.
22–25, apices erect, acute, abaxial faces tomentose or glabrate.
15–18, apices erect, acute or acuminate to cuspidate, abaxial faces glabrous.
hairy;
pappi 5.6–7.6 mm.
glabrous;
pappi 6.8–9.1 mm.
= 18.
= 18.
Ericameria nauseosa var. juncea
Ericameria nauseosa var. psilocarpa
Of conservation concern.
Variety psilocarpa is apparently restricted to Carbon, Duchesne, Emery, and Wasatch counties in east-central Utah.
L. C. Anderson (1986b) excluded the name Ericameria nauseosa var. glareosa (M. E. Jones) G. L. Nesom & G. I. Baird [as Chrysothamnus nauseosus subsp. glareosus (M. E. Jones) H. M. Hall & Clements], because he had seen no herbarium or field material. Jones’s original description is sketchy; he mentioned its similarity to subsp. leiosperma. S. L. Welsh et al. (1987) noted the uncertain disposition of this taxon. A. Cronquist (1994) recognized C. nauseosus var. glareosus (M. E. Jones) H. M. Hall and placed C. nauseosus var. psilocarpus in synonymy, noting that it was equal to E. nauseosa var. glareosa (M. E. Jones) G. L. Nesom & G. I. Baird. Without more substantial documentation, use of var. psilocarpa is preferred over var. glareosa, which we take to be of uncertain application.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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