Castilleja kaibabensis

N. H. Holmgren

Bull. Torrey Bot. Club 100: 89, fig. 4. 1973.

Common names: Kaibab paintbrush
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 616. Mentioned on page 578.

Herbs, perennial, 1.5–3 (–4) dm; from a woody caudex; with a taproot. Stems solitary or few, sometimes several, erect or ascending, unbranched, rarely branched from base or from proximal inflorescence nodes, hairs spreading or reflexed, medium length, ± stiff, distally mixed with scattered, very short-stipitate-glandular ones in inflorescences. Leaves green, often with a dull red-purplish cast, linear to narrowly lanceolate or narrowly oblong, (0.8–) 1.5–4 cm, not fleshy, margins plane, involute, 0 (–3) -lobed, apex acuminate to acute; lobes spreading-ascending, narrowly lanceolate, apex acute. Inflorescences 2–6.5 (–9) × 1.5–3.5 cm; bracts yellow, pale orange, salmon, pink, dull brick-red, or reddish orange throughout, rarely red, or proximally pale greenish, distally colored as above, narrowly lanceolate to lanceolate, 0–3 (–7) -lobed; lobes ascending to erect, linear to lanceolate, short to medium length, arising at or above mid length, central lobe apex obtuse, lateral ones obtuse to acute. Calyces colored as bracts, 20–27 (–30) mm; abaxial and adaxial clefts 6.5–13 (–18) mm, 40–60% of calyx length, deeper than laterals, lateral (2–) 4–7.5 (–10) mm, 25% of calyx length; lobes linear to narrowly lanceolate, apex rounded to acute. Corollas straight or slightly curved, 21–30 (–35) mm; tube 13–19 mm; beak subequal to calyx or exserted, adaxially green, 8–14 mm; abaxial lip whitish to pink with deep green teeth, reduced, not exserted, sometimes visible through front calyx cleft, 0.5–2 mm, 5–15% as long as beak; teeth incurved, dark green, 0.2–1 mm. 2n = 24.


Phenology: Flowering Jul–Sep.
Habitat: Dry or exposed sites in subalpine meadows, low ridges and crests, openings in spruce-fir-aspen forests, fine silts and clay over limestone.
Elevation: 2400–2800 m.

Discussion

Castilleja kaibabensis is endemic to a few large meadow systems on the Kaibab Plateau, north of the North Rim of the Grand Canyon in Coconino County. Recreational activity, grazing, and road construction remain concerns for the management of this species.

Castilleja kaibabensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

"short to medium" is not a number.

... more about "Castilleja kaibabensis"
0.75 cm7.5 mm <br />0.0075 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
whitish +  and pink +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Rounded (?) +  and Acute (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
N. H. Holmgren +
subequal +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
not +, leathery +  and fleshy +
colored;pale greenish;red;pale greenish;red;reddish orange;brick-red;reddish orange;brick-red;dull;pink;salmon;pale orange;yellow +
0-3(-7)-lobed +, narrowly lanceolate +  and lanceolate +
2.7 cm27 mm <br />0.027 m <br /> (3 cm30 mm <br />0.03 m <br />) +
2-lobed +, lobed +  and tubular +
2 cm20 mm <br />0.02 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
red-purplish +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
Kaibab paintbrush +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
curved +  and straight +
2.1 cm21 mm <br />0.021 m <br /> (3 cm30 mm <br />0.03 m <br />) +
2400–2800 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Dry or exposed sites in subalpine meadows, low ridges and crests, openings in spruce-fir-aspen forests, fine silts and clay over limestone. +
much-branched +, unbranched +  and eglandular +
reflexed +  and spreading +
stipitate-glandular +
6.5 cm65 mm <br />0.065 m <br /> (9 cm90 mm <br />0.09 m <br />) +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
deciduous +
basal +  and cauline +
linear;narrowly lanceolate or narrowly oblong +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
not fleshy +
above mid lobes +, arising +, ascending +  and erect +
3 +, 2 +  and 4 +
linear +  and narrowly lanceolate +
subequal +
0(-3)-lobed +  and plane +
short-stipitate-glandular +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering Jul–Sep. +
Bull. Torrey Bot. Club +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
Endemic +  and Conservation concern +
non-secund +  and secund +
elongate +
subequal +
branched +  and unbranched +
sprawling +  and prostrate +
aerial +  and subterranean +
ascending +  and erect +
several;few +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja kaibabensis +
Castilleja +
species +
dark green +  and green +
reduced +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +