Castilleja angustifolia var. flavescens

(Pennell ex Edwin) N. H. Holmgren

in A. Cronquist et al., Intermount. Fl. 4: 488. 1984.

Basionym: Castilleja flavescens Pennell ex Edwin Leafl. W. Bot. 9: 45. 1959
Treatment appears in FNA Volume 17. Treatment on page 587.

Stems: hairs fairly dense, spreading, long, soft, with scattered, shorter, sometimes stipitate-glandular, ones. Bracts distally yellow, yellow-orange, white, pink, reddish pink, or magenta, usually variable within a population, 3–5-lobed. Calyces 21–28 mm; abaxial clefts 7–8 mm, adaxial 7–12 mm. Corollas 27–32 mm.

Phenology: Flowering (Mar–)Apr–Jul.
Habitat: Dry sagebrush slopes and flats, often rocky.
Elevation: 2100–3100 m.


Most plants of var. flavescens have yellow to pale orange inflorescences, but in some populations, such as near Wells, Nevada, the inflorescence can vary to pink, reddish pink, white, or magenta. Variety flavescens is associated with Artemisia arbuscula, its likely host plant, and is often found at higher elevations than Castilleja chromosa (N. H. Holmgren 1984). The variety is found in southeastern Idaho, eastern Nevada, and western Utah. Recent collections from extreme eastern Mono and Modoc counties suggest that var. flavescens may also occur in California, but the identity of these populations has yet to be fully verified.

Selected References


Lower Taxa

J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(Pennell ex Edwin) N. H. Holmgren +
Castilleja flavescens +
Idaho +, Nev. +  and Utah. +
2100–3100 m. +
Dry sagebrush slopes and flats, often rocky. +
Flowering (Mar–)Apr–Jul. +
in A. Cronquist et al., Intermount. Fl. +
Euchroma +  and Oncorhynchus +
Castilleja angustifolia var. flavescens +
Castilleja angustifolia +
variety +