Ericameria nauseosa var. ceruminosa

(Durand & Hilgard) G. L. Nesom & G. I. Baird

Phytologia 75: 85. 1993.

Common names: Desert rabbitbrush
Endemic
Basionym: Linosyris ceruminosus Durand & Hilgard Pl. Heermann., 40. 1854
Synonyms: Chrysothamnus nauseosus subsp. ceruminosus (Durand & Hilgard) H. M. Hall & Clements Chrysothamnus nauseosus var. ceruminosus (Durand & Hilgard) H. M. Hall
Treatment appears in FNA Volume 20. Treatment on page 65. Mentioned on page 63.

Plants 50–70 cm. Stems yellowish green, moderately leafy to nearly leafless, compact tomentose. Leaves yellowish green; blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces tomentulose. Involucres 7–8.5 mm. Phyllaries 16–26 (in vertical ranks), apices recurved, acuminate, abaxial faces tomentose to glabrate, glutinous. Corollas 6–7.5 mm, tubes glabrous, lobes 1.5–2.5 mm, glabrous; style appendages shorter than stigmatic portions. Cypselae hairy; pappi 4.5–6.7 mm.


Phenology: Flowering late summer–fall.
Habitat: Gravelly arroyos
Elevation: 700–1700 m

Discussion

Variety ceruminosa grows in the Mojave Desert.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

tomentose +  and glabrate +
not tailed +, rounded +  and obtuse +
distinct +
acuminate +
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 +
(Durand & Hilgard) G. L. Nesom & G. I. Baird +
decurrent +
Linosyris ceruminosus +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
filiform +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Desert rabbitbrush +
not 2-lipped +  and actinomorphic +
0.6 cm6 mm <br />0.006 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
700–1700 m +
resinous +
gland-dotted +
tomentulose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Gravelly arroyos +
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 /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
sessile +  and petiolate +
yellowish green +
usually ascending +  and spreading +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.67 cm6.7 mm <br />0.0067 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 +
moderately leafy +  and nearly leafless +
resinous +
yellowish green +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus subsp. ceruminosus +  and Chrysothamnus nauseosus var. ceruminosus +
Ericameria nauseosa var. ceruminosa +
Ericameria nauseosa +
variety +
campanulate +
perennial +, biennial +  and annual +