Ericameria nauseosa var. bigelovii

(A. Gray) G. L. Nesom & G. I. Baird

Phytologia 75: 85. 1993.

Common names: Bigelow’s rabbitbrush
Endemic
Basionym: Linosyris bigelovii A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 98, plate 12. 1857
Synonyms: Chrysothamnus nauseosus subsp. bigelovii (A. Gray) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Treatment on page 64. Mentioned on page 63.

Plants 15–120 cm. Stems whitish, nearly leafless at flowering, loosely tomentose. Leaves mostly grayish white; blades 1-nerved, filiform, 15–30 × 0.5–1 mm, faces tomentulose. Involucres 10.5–12.5 mm. Phyllaries 14–18 (–25), apices erect, acute to acuminate, abaxial faces tomentulose. Corollas 9–11 mm, tubes glabrous or puberulent, lobes 0.8–1.5 mm, glabrous; style appendages longer than stigmatic portions. Cypselae glabrous; pappi 7.2–11 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Dry slopes and mesas
Elevation: 1300–2200 m

Distribution

V20-103-distribution-map.gif

Ariz., Colo., N.Mex., Utah.

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
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 +
(A. Gray) G. L. Nesom & G. I. Baird +
decurrent +
Linosyris bigelovii +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
filiform +
0.5mm;1mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Bigelow’s rabbitbrush +
not 2-lipped +  and actinomorphic +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
1300–2200 m +
resinous +
gland-dotted +
tomentulose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry slopes and mesas +
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 +
1.05 cm10.5 mm <br />0.0105 m <br /> (1.25 cm12.5 mm <br />0.0125 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
grayish white +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.72 cm7.2 mm <br />0.0072 m <br /> (1.1 cm11 mm <br />0.011 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 +
resinous +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus subsp. bigelovii +
Ericameria nauseosa var. bigelovii +
Ericameria nauseosa +
variety +
campanulate +
puberulent +  and glabrous +
perennial +, biennial +  and annual +