Ericameria nauseosa var. latisquamea

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

Phytologia 75: 86. 1993.

Common names: Broadscale rabbitbrush
Basionym: Bigelowia graveolens var. latisquamea A. Gray Proc. Amer. Acad. Arts 8: 645. 1873 (as Bigelovia)
Synonyms: Chrysothamnus nauseosus subsp. latisquameus (A. Gray) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Treatment on page 66. Mentioned on page 63.

Plants 130–200 cm. Stems white, leafy, loosely tomentose. Leaves whitish; blades 1-nerved, filiform, 15–45 × 1–2 mm, faces loosely tomentose. Involucres 7.5–10.5 mm. Phyllaries 15–17, apices erect, obtuse, outer abaxial faces densely tomentulose, inner glabrous. Corollas 7–9.5 mm, tubes glabrous or puberulent, lobes 0.6–1 mm, glabrous; style appendages equaling or shorter than stigmatic portions. Cypselae densely hairy; pappi 4.8–7.6 mm. 2n = 18.


Phenology: Flowering fall.
Habitat: Dry streambeds and arroyos
Elevation: 1200–2200 m

Distribution

V20-109-distribution-map.gif

Ariz., N.Mex., Mexico (Sonora)

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 +
Bigelowia graveolens var. latisquamea +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
filiform +
1mm;2mm +
rugulose +  and muricate +
tan +  and reddish +
subequal +
Broadscale rabbitbrush +
not 2-lipped +  and actinomorphic +
0.7 cm7 mm <br />0.007 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
turbinate +  and cylindric or oblanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Mexico (Sonora) +
1200–2200 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry streambeds and 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 +
0.75 cm7.5 mm <br />0.0075 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 +
erect;spreading or reflexed +
deltate +  and triangular +
raised +  and evident +
glabrous +  and tomentulose +
2-carpellate +
persistent +
0.48 cm4.8 mm <br />0.0048 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 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. latisquameus +
Ericameria nauseosa var. latisquamea +
Ericameria nauseosa +
variety +
campanulate +
puberulent +  and glabrous +
perennial +, biennial +  and annual +