Raillardella argentea

(A. Gray) A. Gray in W. H. Brewer et al.

in W. H. Brewer et al., Bot. California 1: 417. 1876.

IllustratedEndemic
Basionym: Railliardia argentea A. Gray Proc. Amer. Acad. Arts 6: 550. 1865 (as Raillardia)
Treatment appears in FNA Volume 21. Treatment on page 257.

Plants 1–15 cm. Leaf-blades oblanceolate, margins entire or toothed, faces sericeous (silvery), sometimes sparsely stipitate-glandular as well. Ray-florets 0. Disc-florets 7–26; corollas yellow, 6–11 mm. 2n = 34, 36.


Phenology: Flowering Jul–Sep.
Habitat: Dry, exposed, often gravelly sites
Elevation: 1800–3900 m

Discussion

Raillardella argentea occurs widely in the Sierra Nevada and southern Cascade Range and locally in the Klamath Ranges, San Bernardino Mountains (Mt. San Gorgonio), and western ranges of the Great Basin. Artificial hybrids with R. pringlei are completely fertile and vigorous (D. W. Kyhos et al. 1990); the two species are not known to co-occur in nature.

Selected References

None.

Lower Taxa

None.
... more about "Raillardella argentea"
not tailed +, rounded +  and obtuse +
pale +  and dark +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
umbelliform +, spiciform +, paniculiform +, glomerulate +  and corymbiform +
indeterminate +  and determinate +
Bruce G. Baldwin +  and John L. Strother +
(A. Gray) A. Gray in W. H. Brewer et al. +
decurrent +
Railliardia argentea +
compound +  and simple +
linear to linear-elliptic +
oblanceolate;linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
hairy +  and glabrous +
fusiform +, clavate +, obpyramidal +, terete +, compressed +  and obcompressed +
fertile +  and bisexual +
clavate +  and terete +
fertile +  and bisexual +
Calif. +, Nev. +  and Oreg. +
1800–3900 m +
stipitate-glandular +  and sericeous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, exposed, often gravelly sites +
discoid +  and radiate +
rarely +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
campanulate;cylindric +
oblanceolate +
deltate +
toothed +  and entire +
2-carpellate +
persistent +
ciliate +  and plumose +
Flowering Jul–Sep. +
1 +  and 13 +
in W. H. Brewer et al., Bot. California +
clavate +  and terete +
setulose +  and glabrous +
convex;flat +
8 +  and 30 +
ciliate +  and plumose +
exalbuminous +
Illustrated +  and Endemic +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Raillardella argentea +
Raillardella +
species +
cylindric +
toothed +  and entire +
1 cm10 mm <br />0.01 m <br /> (50 cm500 mm <br />0.5 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +