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Castilleja pilosa var. steenensis

Steen's Mountain paintbrush, Steens Indian paintbrush

Stems

hairs retrorse or spreading, ± curved, stiff, 0.5–0.8(–1) mm.

Leaf

lobes widely spreading.

Inflorescences

2.5–10 cm;

bracts proximally greenish, light dusky pink, or salmon, with margins or distal portions the same color or yellow or white, 3–5-lobed;

lobes spreading to ascending, short to long, arising below mid length.

Corolla

beaks 4.5–6.5 mm;

abaxial lip purple or pink, sometimes pale yellow, distally sometimes white, 3.5–6 mm, 75–100% as long as beak;

teeth white or pale yellow.

Calyces

(12–)14–20(–28) mm;

abaxial and adaxial clefts 5–12 mm, 45–50% of calyx length, lateral 5–12 mm, 45–50% of calyx length;

lobes linear to lanceolate.

Castilleja pilosa var. steenensis

Phenology Flowering May–Aug.
Habitat Rocky slopes, ledges, dry meadows, sagebrush steppes, subalpine to alpine, volcanic soils.
Elevation (1900–)2000–2900 m. ((6200–)6600–9500 ft.)
Distribution
from FNA
OR
[BONAP county map]
Discussion

Variety steenensis is endemic to the upper elevations of Steens Mountain in Harney County. It appears distinct when seen in its dwarfed form on the highest slopes; some transitional plants exist at lower elevations where it encounters var. pilosa. Genetic studies of this complex are in progress.

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

Source FNA vol. 17, p. 645.
Parent taxa Orobanchaceae > Castilleja > Castilleja pilosa
Sibling taxa
C. pilosa var. longispica, C. pilosa var. pilosa
Synonyms C. steenensis
Name authority (Pennell) N. H. Holmgren: in A. Cronquist et al., Intermount. Fl. 4: 480. (1984)
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