Ericameria nauseosa var. washoensis

(L. C. Anderson) G. L. Nesom & G. I. Baird

Phytologia 75: 88. 1993.

Common names: Washoe rabbitbrush
EndemicConservation concern
Basionym: Chrysothamnus nauseosus subsp. washoensis L. C. Anderson Phytologia 38: 315, fig. 3. 1978
Synonyms: Ericameria nauseosa var. washoensis (L. C. Anderson) G. L. Nesom & G. I. Baird
Treatment appears in FNA Volume 20. Treatment on page 69. Mentioned on page 63.

Plants 30–45 (–100) cm. Stems whitish, sparsely leafy, loosely tomentose. Leaves grayish green; blades 1–3-nerved, spatulate to narrowly oblanceolate, 20–30 × 2–3 mm, faces loosely hairy. Involucres 10–12 mm. Phyllaries 16–20 (–30), (brownish costal nerves often evident) apices acute to obtuse, outer abaxial faces sparsely villous to tomentose, inner tomentulose. Corollas 7.5–9 (–10) mm, tubes puberulent, lobes 1.3–1.6 mm, villous; style appendages longer than stigmatic portions. Cypselae distally pilose; pappi 6.5–10 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Rocky, open sites in juniper and pinyon grasslands
Elevation: 1500–1700 m

Discussion

Variety washoensis is known from northeastern California and northwestern Nevada.

of conservation concern

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
acute;obtuse +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
rounded +  and flat-topped +
Lowell E. Urbatsch +, Loran C. Anderson +, Roland P. Roberts +  and Kurt M. Neubig +
(L. C. Anderson) G. L. Nesom & G. I. Baird +
decurrent +
Chrysothamnus nauseosus subsp. washoensis +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
spatulate;narrowly oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Washoe rabbitbrush +
not 2-lipped +  and actinomorphic +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.75 cm7.5 mm <br />0.0075 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Nev. +
1500–1700 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky, open sites in juniper and pinyon grasslands +
thyrsiform +, paniculiform +, branched +, racemiform +, cymiform +, discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
obconic;subcylindric +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
grayish green +
usually ascending +  and spreading +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
tomentulose +, sparsely villous +  and tomentose +
2-carpellate +
persistent +
0.65 cm6.5 mm <br />0.0065 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering late summer–fall. +
0.15 cm1.5 mm <br />0.0015 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ovate +  and lanceolate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Endemic +  and Conservation concern +
resinous +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Ericameria nauseosa var. washoensis +
Ericameria nauseosa var. washoensis +
Ericameria nauseosa +
variety +
campanulate +
puberulent +
perennial +, biennial +  and annual +
45 cm450 mm <br />0.45 m <br /> (100 cm1,000 mm <br />1 m <br />) +