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silky railardella, silky raillardella, silvery raillardella

Habit 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.

Raillardella argentea

Phenology Flowering Jul–Sep.
Habitat Dry, exposed, often gravelly sites
Elevation 1800–3900 m (5900–12800 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 257.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Madiinae > Raillardella
Sibling taxa
R. pringlei, R. scaposa
Synonyms Railliardia argentea
Name authority (A. Gray) A. Gray: in W. H. Brewer et al., Bot. California 1: 417. (1876)
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