Ericameria nauseosa var. arenaria

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

Phytologia 75: 85. 1993.

Common names: Sand rabbitbrush
Endemic
Basionym: Chrysothamnus nauseosus subsp. arenarius L. C. Anderson Phytologia 38: 311, fig. 1. 1978
Synonyms: Chrysothamnus nauseosus var. arenarius (L. C. Anderson) S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 64. Mentioned on page 63.

Plants 70–120 cm. Stems grayish green, moderately leafy, moderately compactly tomentose. Leaves grayish green; blades 1-nerved, linear, 40–75 × 0.8–1.1 mm, faces tomentose. Involucres 16–19 mm. Phyllaries (19–) 22–27 (in strongly vertical ranks), apices ± recurved, cuspidate-aristate, abaxial faces glabrous or glabrescent. Corollas 12–14.2 mm, tubes glabrous, lobes 1.2–2 mm, glabrous; style appendages longer than stigmatic portions. Cypselae hairy; pappi 9.6–12.7 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Sandhills and sandstone cliffs
Elevation: 1500–2000 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

glabrescent +  and glabrous +
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 +
(L. C. Anderson) G. L. Nesom & G. I. Baird +
decurrent +
Chrysothamnus nauseosus subsp. arenarius +
4 cm40 mm <br />0.04 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
filiform;narrowly oblanceolate +
0.8mm;1.1mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Sand rabbitbrush +
not 2-lipped +  and actinomorphic +
1.2 cm12 mm <br />0.012 m <br /> (1.42 cm14.2 mm <br />0.0142 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Utah. +
1500–2000 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandhills and sandstone cliffs +
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 +
1.6 cm16 mm <br />0.016 m <br /> (1.9 cm19 mm <br />0.019 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 +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
2-carpellate +
persistent +
0.96 cm9.6 mm <br />0.0096 m <br /> (1.27 cm12.7 mm <br />0.0127 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 green +
ascending +  and spreading +
lanceolate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus nauseosus var. arenarius +
Ericameria nauseosa var. arenaria +
Ericameria nauseosa +
variety +
campanulate +
perennial +, biennial +  and annual +