Ericameria nauseosa var. juncea

(Greene) G. L. Nesom & G. I. Baird

Phytologia 75: 86. 1993.

Common names: Rush rabbitbrush
Endemic
Basionym: Bigelowia juncea Greene Bot. Gaz. 6: 184. 1881 (as Bigelovia)
Synonyms: Chrysothamnus nauseosus var. junceus (Greene) H. M. Hall
Treatment appears in FNA Volume 20. Treatment on page 66. Mentioned on page 63.

Plants 40–70 cm. Stems yellowish green, usually leafless at flowering, compactly tomentose. Leaves yellowish green; blades 1-nerved, filiform, 10–30 × 0.7–1 mm, faces compactly tomentose. Involucres 9.5–12 mm. Phyllaries 22–25, apices erect, acute, abaxial faces tomentose or glabrate. Corollas 7–8.5 mm, tubes hairy, lobes 0.7–0.9 mm, villous; style appendages longer than stigmatic portions. Cypselae hairy; pappi 5.6–7.6 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Blackbrush, matchweed, shadscale, and pinyon-juniper communities
Elevation: 1200–1800 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

glabrate +  and tomentose +
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 +
(Greene) G. L. Nesom & G. I. Baird +
decurrent +
Bigelowia juncea +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
filiform +
0.7mm;1mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Rush rabbitbrush +
not 2-lipped +  and actinomorphic +
0.7 cm7 mm <br />0.007 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Nev. +  and Utah. +
1200–1800 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Blackbrush, matchweed, shadscale, and pinyon-juniper communities +
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 +
0.95 cm9.5 mm <br />0.0095 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 +
yellowish green +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.56 cm5.6 mm <br />0.0056 m <br /> (0.76 cm7.6 mm <br />0.0076 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 +
yellowish green +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus var. junceus +
Ericameria nauseosa var. juncea +
Ericameria nauseosa +
variety +
campanulate +
perennial +, biennial +  and annual +