Common names: Rubber rabbitbrush
Endemic
Treatment appears in FNA Volume 20. Treatment on page 67. Mentioned on page 62, 64.
Revision as of 20:04, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Plants mostly 20–60 cm. Stems grayish to white, leafy, loosely tomentose. Leaves grayish green to white; blades 1-nerved, narrowly linear, 10–50 × 1–1.5 mm, faces loosely tomentose. Involucres 7–10.5 mm. Phyllaries 10–18, apices erect, mostly obtuse, abaxial faces tomentose, sometimes sparingly. Corollas 6.5–9 mm, tubes usually puberulent, rarely arachnose, lobes 1–2 mm, glabrous; style appendages longer than stigmatic portions. Cypselae densely hairy; pappi 5.2–7.2 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Plains and hills, often in barren alkaline soils
Elevation: 300–2000 m

Distribution

V20-113-distribution-map.gif

Alta., Sask., Colo., Idaho, Mont., Nebr., N.Dak., S.Dak., Wyo.

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 +
(Pallas ex Pursh) G. L. Nesom & G. I. Baird +
decurrent +
Chrysocoma nauseosa +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
filiform;narrowly oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Rubber rabbitbrush +
not 2-lipped +  and actinomorphic +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, Sask. +, Colo. +, Idaho +, Mont. +, Nebr. +, N.Dak. +, S.Dak. +  and Wyo. +
300–2000 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Plains and hills, often in barren alkaline soils +
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 +
0.7 cm7 mm <br />0.007 m <br /> (1.05 cm10.5 mm <br />0.0105 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 +  and white +
usually ascending +  and spreading +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.72 cm7.2 mm <br />0.0072 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 +
grayish +  and white +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus +
Ericameria nauseosa var. nauseosa +
Ericameria nauseosa +
variety +
campanulate +
arachnose +  and puberulent +
perennial +, biennial +  and annual +