Raillardella argentea
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
Distribution
Calif., Nev., Oreg.
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.