Castilleja thompsonii
Castilleja praeterita
Thompson's Indian paintbrush, Thompson's owl clover, Thompson's paintbrush
Salmon Creek Indian paintbrush, Salmon Creek paintbrush
few to many, erect or ascending, unbranched or branched, hairs spreading, long, stiff, sometimes soft (especially in higher elevations), eglandular, mixed with shorter stipitate-glandular ones.
several to many, ascending to erect, ± decumbent at base, branched or unbranched, sometimes with short, leafy axillary shoots, hairs spreading to ascending, long, soft to ± stiff, mixed with short-eglandular ones.
green to purple or reddish brown, linear to narrowly oblong or linear-lanceolate, 1.4–7.4 cm, not fleshy, margins plane to ± wavy, involute or flat, 3(–7)-lobed, apex acuminate;
lobes spreading-ascending, linear, short to long moving up leaf axis, apex acute or obtuse.
purple or green, linear-lanceolate to lanceolate, 3–5 cm, not fleshy, margins plane, partly involute, 3–5-lobed, apex acuminate, acute, or rounded;
lobes sometimes divergent, spreading-ascending, linear, apex obtuse to rounded.
2.5–14 × 1–4 cm;
bracts greenish to pale yellow or reddish brown throughout, or proximally greenish to dull reddish purple, or ruddy brown, distally greenish to yellow-green or yellow, often aging dull reddish to dull purplish, lanceolate to oblong to ovate, 3–5(–9)-lobed;
lobes spreading to ascending, linear to narrowly lanceolate, long, proximal lobes arising below mid length, apex acute to obtuse.
(2.5–)5–15 × 1.5–2 cm;
bracts proximally green to dull purplish, distally pale reddish purple, dull red, pale salmon, pale orange, or bright to pale yellow, oblong, 3(–5)-lobed;
lobes spreading to ascending, linear to oblanceolate, distal pair, if present, short and toothlike, short to long, arising at or above mid length, center lobe apex rounded to truncate, lateral lobes obtuse to rounded.
straight, 18–21 mm;
tube 11–16 mm; subequal to calyx, sometimes beak exserted;
beak adaxially green, 5–7(–8) mm;
abaxial lip white, often proximally reddish, prominent, scarcely expanded, ± cylindric, 2.5–4(–5) mm, 50–70% as long as beak, glabrous or obscurely puberulent;
teeth incurved to erect, white, 2.5 mm.
straight, 11–16 mm;
tube 10–13 mm;
beak included or tip exserted;
beak adaxially green, 4–5 mm;
abaxial lip deep green, reduced, with narrow pouches, 2.5–3 mm, 30–45% as long as beak;
teeth reduced to minute apiculations, dark green, 0.5–1 mm.
colored as bracts, 12–25 mm;
abaxial and adaxial clefts 4–8 mm, 20–60% of calyx length, deeper than laterals, lateral (0–)1–3 mm, 7–25% of calyx length;
lobes linear, lanceolate, or triangular, apex acute, sometimes obtuse.
proximally usually whitish, distally colored as bracts, 13–18 mm;
abaxial and adaxial clefts 5–6(–9) mm, ca. 50% of calyx length, deeper than laterals, lateral 0.5–1.2 mm, ca. 18% of calyx length;
lobes ± hemispheric, segments often curved outwards, exposing corollas, apex rounded to obtuse, rarely acute.
= 24, 48.
= 24.
Castilleja thompsonii
Castilleja praeterita
Castilleja thompsonii is a characteristic species of the sagebrush communities on the eastern slope of the Cascade Range in Washington, and in the high deserts of the Columbia Basin. Historically, its range approached but apparently never entered Idaho in the Spokane River valley, but much of its habitat in that area is now converted to agriculture or suburban development or overwhelmed by non-native, invasive plants. Castilleja thompsonii occurs in a few sites in the Okanogan Valley region of southern British Columbia and at one site on the eastern slopes of the Cascade Range in Wasco County, Oregon. A distinctive form from the subalpine and alpine zones of Mt. Adams, in the southern Cascade Range of Washington, was named C. villicaulis. This form may merit varietal status under C. thompsonii. While both names were described in the same paper, C. thompsonii is the name used in all regional floras since their publication, after C. villicaulis was reduced to synonymy by M. Ownbey (1959).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Castilleja praeterita is endemic to subalpine, sagebrush-dominated meadows in the southeastern Sierra Nevada of Inyo and Tulare counties. It is closely associated with and likely parasitic on Artemisia rothrockii. Inflorescence coloration varies by population, with some having only yellow-bracted plants, while others are pale orange to pale red with occasional pale yellow variants. Yet other populations have only pale salmon-colored bracts.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
