Castilleja lutescens

(Greenman) Rydberg

Mem. New York Bot. Gard. 1: 359. 1900.

Common names: Yellowish paintbrush
Endemic
Basionyms: Castilleja pallida var. lutescens Greenman Bot. Gaz. 25: 265. 1898
Treatment appears in FNA Volume 17. Treatment on page 624. Mentioned on page 578, 611, 613, 625, 649.

Herbs, perennial, 1.4–6 dm; from a woody caudex; with a taproot. Stems few to several, erect or ascending, sometimes decumbent at base, unbranched or branched, hairs spreading to retrorse, short, scabrid below inflorescence, sometimes becoming medium length to long, soft to stiff, mixed with short-stipitate-glandular ones in inflorescence. Leaves green, sometimes purplish, linear to lanceolate or narrowly oblong, 1–8.5 cm, not fleshy, margins plane, flat or involute lengthwise, 0 (–5) -lobed, apex acute; lobes ascending, linear, central one sometimes shallowly toothed, apex acute to obtuse. Inflorescences 3–14 × 1.5–3 cm; bracts greenish throughout, or proximally greenish, distally pale to bright-yellow or whitish, rarely pale orangish, lanceolate to oblong, (0–) 3–7-lobed; lobes ascending to erect, linear to lanceolate or narrowly oblong, medium length, arising at or above mid length, central lobe apex obtuse to rounded, lateral ones acute. Calyces colored as bracts, 15–25 mm; abaxial and adaxial clefts 6–13 mm, 50% of calyx length, deeper than laterals, lateral 1–7 mm, 15% of calyx length; lobes narrowly triangular to linear, apex acute. Corollas straight or slightly curved, 21–27 mm; tube 14–16 mm; beak partly exserted, adaxially green, 7–12 mm; abaxial lip ascending, green, reduced, 2–4 mm, 25–50% as long as beak; teeth erect or incurved, sometimes spreading, green or white, 0.7–2.5 mm. 2n = 48, 96.


Phenology: Flowering May–Aug.
Habitat: Grasslands, open conifer forests, moist meadows, rocky slopes, valleys, montane.
Elevation: 600–1900 m.

Distribution

Alta., B.C., Idaho, Mont., Oreg., Wash.

Discussion

Castilleja lutescens is found east of the Cascade Range in Oregon and Washington and ranges east to western Montana and the adjacent interior of western Canada. Its inflorescences vary in color from entirely greenish to white or yellowish, and the stature of the plants is also variable, trending from moderate and compact in grasslands to taller in more forested situations. In the Blue Mountains of Garfield County, Washington, occasional hybrids form between C. lutescens and C. hispida var. acuta, which often both occur in the same vicinity.

L. R. Heckard (1968) reported a chromosome count of ca. 2n = 120 from a population in Montana.

Selected References

None.

Lower Taxa

None.

"medium" is not a number.

... more about "Castilleja lutescens"
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Acute (?) +  and Obtuse (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(Greenman) Rydberg +
Castilleja pallida var. lutescens +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
not +, leathery +  and fleshy +
pale orangish;distally pale;bright-yellow or whitish +
(0-)3-7-lobed +, lanceolate +  and oblong +
lateral +  and deeper +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
2-lobed +, lobed +  and tubular +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
Yellowish paintbrush +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
curved +  and straight +
2.1 cm21 mm <br />0.021 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Alta. +, B.C. +, Idaho +, Mont. +, Oreg. +  and Wash. +
600–1900 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Grasslands, open conifer forests, moist meadows, rocky slopes, valleys, montane. +
much-branched +, unbranched +  and eglandular +
spreading +  and retrorse +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
purplish +  and green +
deciduous +
basal +  and cauline +
linear;lanceolate or narrowly oblong +
1 cm10 mm <br />0.01 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
not fleshy +
above mid lobes +, arising +, ascending +  and erect +
3 +, 2 +  and 4 +
narrowly triangular +  and linear +
subequal +
0(-5)-lobed +, involute +, flat +  and plane +
short-stipitate-glandular +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering May–Aug. +
Mem. New York Bot. Gard. +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
non-secund +  and secund +
elongate +
subequal +
branched +  and unbranched +
aerial +  and subterranean +
ascending +  and erect +
few;several +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja lutescens +
Castilleja +
species +
white +  and green +
shallow;deep +
spreading +, incurved +  and erect +
reduced +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +