Castilleja lassenensis

Eastwood

Leafl. W. Bot. 2: 244. 1940.

Common names: Mt. Lassen paintbrush
Endemic
Treatment appears in FNA Volume 17. Treatment on page 619. Mentioned on page 574, 620.

Herbs, perennial, 0.8–2.1 dm; from a woody caudex; with slender, branching roots. Stems few-to-many, decumbent-based to erect, unbranched except for short, leafy axillary shoots, hairs sparse, spreading, long, soft, mixed with short-stipitate-glandular ones. Leaves green to purple (sometimes different on stems of same plant), linear-lanceolate, 1–3.5 cm, not fleshy, margins plane, flat, 0 (–3) -lobed, apex acute; lobes spreading-ascending, linear-lanceolate to lanceolate, apex acute. Inflorescences 2–4.5 × 1.5–2 cm; bracts proximally greenish to dull brownish purple, distally pink to magenta or reddish purple, ovate, broadly lanceolate, or oblong, (0–) 3–5-lobed; lobes ascending to erect, lanceolate, medium length, arising near or above mid length, apex acute to rounded. Calyces proximally brown or dull magenta, sometimes green, distally colored as bracts, 11–19 mm; abaxial and adaxial clefts 9–10 mm, 55–60% of calyx length, deeper than laterals, lateral 2.5–5 mm, 15–25% of calyx length; lobes oblong, apex rounded. Corollas straight, 18–20 mm; tube 14–15 mm; abaxial lip sometimes partly exserted, beak usually exserted; beak adaxially white, 7–10 mm, margins white or pale salmon; abaxial lip pale green to yellow-green, inflated, pouches 3, shallow, central pouch shallowly grooved, visible through front cleft, 6–7 mm, 60–70% as long as beak; teeth erect, white, 1–2 mm. Stigmas pale green. 2n = 24.


Phenology: Flowering Jul–Sep.
Habitat: Moist to wet meadows, shorelines, subalpine, volcanic soils.
Elevation: 1500–2500 m.

Discussion

Castilleja lassenensis is restricted to the Mt. Lassen area in Shasta and Tehama counties. See the discussion of 55. C. lemmonii for information on the relationship between these two species.

Selected References

None.

Lower Taxa

None.

"acute" is not a number."medium" is not a number.

... more about "Castilleja lassenensis"
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pale green +  and yellow-green +
Rounded (?) +  and Acute (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
Eastwood +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not +, leathery +  and fleshy +
proximally greenish;dull brownish purple distally pink +
(0-)3-5-lobed +, oblong +, lanceolate +  and ovate +
colored +, green +, magenta +, dull +  and brown +
2-lobed +, lobed +  and tubular +
1.1 cm11 mm <br />0.011 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Mt. Lassen paintbrush +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1500–2500 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Moist to wet meadows, shorelines, subalpine, volcanic soils. +
much-branched +, unbranched +  and eglandular +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
green +  and purple +
deciduous +
basal +  and cauline +
linear-lanceolate +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
not fleshy +
above mid lobes +, arising +, ascending +  and erect +
3 +, 2 +  and 4 +
oblong +, lanceolate +  and linear-lanceolate +
subequal +
pale salmon +  and white +
0(-3)-lobed +  and plane +
short-stipitate-glandular +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering Jul–Sep. +
shallow +
Leafl. W. Bot. +
slender +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
non-secund +  and secund +
elongate +
subequal +
sprawling +  and prostrate +
aerial +  and subterranean +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja lassenensis +
Castilleja +
species +
shallow;deep +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +