Chrysothamnus eremobius

L. C. Anderson

Brittonia 35: 23, fig. 1. 1983.

Common names: Pintwater rabbitbrush
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 189. Mentioned on page 187, 188.

Subshrubs, 10–30 cm; with woody, highly branched caudices, bark whitish to dark gray, finely ridged, ± fibrous with age. Stems erect, green becoming whitish, glabrous, ± resinous. Leaves ascending to spreading; petiolate; blades mostly 3-nerved (nerves reticulate, raised), elliptic to oblanceolate or obovate, 20–80 × (7–) 10–25 mm (mostly larger basally, ± reduced distally), flat, apices acute, faces glabrous, gland-dotted. Heads in condensed, cymiform arrays, not overtopped by leaves. Involucres cylindric to turbinate, 6.5–8.8 × 1.8–2.5 mm. Phyllaries 19–24 (–30) in 3–4 series, in vertical ranks, tan with apical green spot, midnerves evident distally, ovate to lanceolate, 1.5–6 × 0.7–1.5 mm, unequal, chartaceous, apices obtuse to acuminate, flat, faces glabrous. Disc-florets 5 (–6); corollas 4–5 mm, lobes 0.8–1.2 mm; style-branches 2.2–2.7 mm, appendages 0.8–1.2 mm. Cypselae cylindric, 2.5–3 mm, faces hairy; pappi tan, 3.1–3.9 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Crevices of limestone cliffs
Elevation: 1400–1700 m

Discussion

Of conservation concern.

Chrysothamnus eremobius is known only from the Pintwater and Sheep ranges of southern Nevada.

Selected References

None.

Lower Taxa

None.
... more about "Chrysothamnus eremobius"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
cymiform +  and condensed +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
L. C. Anderson +
whitish +  and dark gray +
decurrent +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elliptic;oblanceolate or obovate +
10mm;25mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Pintwater rabbitbrush +
not 2-lipped +  and actinomorphic +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric +
fertile +  and bisexual +
1400–1700 m +
resinous +
gland-dotted +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices of limestone cliffs +
in condensed cymiform clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.88 cm8.8 mm <br />0.0088 m <br />) +
cylindric;turbinate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
erect;spreading +
triangular +  and lanceolate +
hirtellous +  and ciliate +
1.5mm +  and 6mm +
ovate +  and lanceolate +
0.7mm +  and 1.5mm +
2-carpellate +
persistent +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
Flowering late summer–fall. +
lanceolate +  and ovate or obovate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Endemic +  and Conservation concern +
resinous +
green becoming whitish +
appendaged +  and truncate +
papillate +  and smooth +
Vanclevea +
Chrysothamnus eremobius +
Chrysothamnus +
species +
campanulate +
perennial +, biennial +  and annual +