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Castilleja pilosa var. steenensis

Steen's Mountain paintbrush, Steens Indian paintbrush

Photo is of parent taxon

longspike Indian paintbrush, white paintbrush

Stems

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

hairs spreading or retrorse and curved, soft.

Leaf

lobes widely spreading.

lobes ascending-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.

2–16 cm;

bracts proximally light green, or yellow-green, sometimes becoming pink or dull purple, with margins or distal portions pale yellow, sometimes soft pink or buff, 3–5(–9)-lobed;

lobes erect, sometimes spreading, short to medium length, arising near or above 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.

beaks 4–7 mm;

abaxial lip proximally green or pale yellow, sometimes dull purple, distally white to sometimes pink, 2.5–5 mm, 50–85% as long as beak;

teeth white to pale yellow, rarely pink.

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.

9–15(–20) mm;

abaxial and adaxial clefts 2–7 mm, 40–45% of calyx length, lateral 2–5.5 mm, 40–50% of calyx length;

lobes linear or narrowly triangular.

2n

= 24, 48, 96.

Castilleja pilosa var. steenensis

Castilleja pilosa var. longispica

Phenology Flowering May–Aug. Flowering Jun–Aug.
Habitat Rocky slopes, ledges, dry meadows, sagebrush steppes, subalpine to alpine, volcanic soils. Moist to dry meadows, sagebrush steppes, woodlands, rocky slopes, ridges, montane.
Elevation (1900–)2000–2900 m. ((6200–)6600–9500 ft.) 1700–2000 m. (5600–6600 ft.)
Distribution
from FNA
OR
[BONAP county map]
from FNA
ID; MT; WY
[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.)

Variety longispica is distributed across central and southeastern Idaho, as well as adjacent Montana and Wyoming. This variety is often somewhat variable in color within populations, ranging from pale greenish yellow to various shades of pale pink to pale purple.

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

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