Chrysothamnus depressus

Nuttall

Proc. Acad. Nat. Sci. Philadelphia 4: 19. 1848.

Common names: Long-flowered rabbitbrush
Endemic
Treatment appears in FNA Volume 20. Treatment on page 189. Mentioned on page 188.

Shrubs, 10–50 cm; woody, highly branched caudices, proximal branches decumbent, bark tan to gray, flaky with age. Stems green, becoming whitish tan, ± ridged from leaf-bases, densely puberulent. Leaves erect or closely ascending; sessile; blades with evident midnerves, linear to oblanceolate or narrowly oblong, 7–30 × 1.5–7 mm, flat to keeled, apices acute (often apiculate), faces glabrous or puberulent, sometimes sparsely stipitate-glandular. Heads in densely cymiform arrays, not overtopped by distal leaves. Involucres obconic, 9–15 × 3–5 mm. Phyllaries 20–25 in 4–6 series, in 5 strong vertical ranks, tan, often with green and/or purplish markings, midnerves evident throughout and ± expanded apically, lanceolate to elliptic, 3–8 × 0.5–1.5 mm, unequal, outer often herbaceous, inner scarious, strongly keeled, apices acute to acuminate, flat, faces puberulent. Disc-florets 5–6; corollas 7–11 mm, lobes 1–2.1 mm; style-branches 2.4–3.3 mm, appendages 1.5–2 mm. Cypselae tan, subcylindric (tapering proximally), ± flattened, 5–6.5 mm, faces glabrous, sparsely glandular distally; pappi whitish tan, 5.5–7.5 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Dry canyons and rocky crevices
Elevation: 1000–2700 m

Distribution

V20-410-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Utah.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Chrysothamnus depressus"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
Nuttall +
tan +  and gray +
decurrent +
compound +  and simple +
0.7 cm7 mm <br />0.007 m <br /> (3 cm30 mm <br />0.03 m <br />) +
flat;keeled +
1.5mm;7mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Long-flowered rabbitbrush +
not 2-lipped +  and actinomorphic +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
flattened +  and subcylindric +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +  and Utah. +
1000–2700 m +
resinous +
gland-dotted +
glabrous +, puberulent +  and stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry canyons and rocky crevices +
in condensed cymiform clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
erect;spreading +
triangular +  and lanceolate +
hirtellous +  and ciliate +
purplish +  and green +
3mm +  and 8mm +
lanceolate +  and elliptic +
unequal +  and expanded +
0.5mm +  and 1.5mm +
2-carpellate +
whitish tan +
persistent +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Flowering late summer–fall. +
lanceolate +  and ovate or obovate +
Proc. Acad. Nat. Sci. Philadelphia +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
whitish tan +  and green +
ascending +  and erect or spreading +
appendaged +  and truncate +
papillate +  and smooth +
Vanclevea +
Chrysothamnus depressus +
Chrysothamnus +
species +
campanulate +
perennial +, biennial +  and annual +