Castilleja angustifolia var. flavescens |
Castilleja angustifolia var. angustifolia |
|
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northwestern Indian paintbrush |
northwestern Indian paintbrush, violet desert paintbrush |
|
Stems | hairs fairly dense, spreading, long, soft, with scattered, shorter, sometimes stipitate-glandular, ones. |
hairs sparse to moderately dense, spreading to retrorse, long, soft to stiff, usually mixed with short-glandular ones. |
Bracts | distally yellow, yellow-orange, white, pink, reddish pink, or magenta, usually variable within a population, 3–5-lobed. |
distally pink or pink-purple, sometimes pale orange, yellowish, or white, 3–5-lobed. |
Corollas | 27–32 mm. |
18–25 mm. |
Calyces | 21–28 mm; abaxial clefts 7–8 mm, adaxial 7–12 mm. |
13–20 mm; abaxial clefts 3–6 mm, adaxial 5–8 mm. |
Castilleja angustifolia var. flavescens |
Castilleja angustifolia var. angustifolia |
|
Phenology | Flowering (Mar–)Apr–Jul. | Flowering (Apr–)May–Jul. |
Habitat | Dry sagebrush slopes and flats, often rocky. | Dry sagebrush slopes and flats. |
Elevation | 2100–3100 m. (6900–10200 ft.) | 1300–2200 m. (4300–7200 ft.) |
Distribution |
ID; NV; UT |
ID; MT; OR; WY |
Discussion | 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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety angustifolia has pink to purple inflorescences over most of its range from southeastern Oregon and southern Idaho to southwestern Montana and northwestern Wyoming. At the eastern edge of its distribution, the colors vary more, possibly representing hybridization or contact with the more eastern var. dubia, which usually has yellow inflorescences. Plants of the western slope of the Big Horn Mountains, Wyoming, are morphologically intermediate between these two varieties. In the same area, var. angustifolia occasionally hybridizes with Castilleja flava var. flava. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 587. | FNA vol. 17, p. 587. |
Parent taxa | Orobanchaceae > Castilleja > Castilleja angustifolia | Orobanchaceae > Castilleja > Castilleja angustifolia |
Sibling taxa | ||
Synonyms | C. flavescens | |
Name authority | (Pennell ex Edwin) N. H. Holmgren: in A. Cronquist et al., Intermount. Fl. 4: 488. (1984) | unknown |
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