Castilleja christii

N. H. Holmgren

Bull. Torrey Bot. Club 100: 91, fig. 5. 1973.

Common names: John Christ’s paintbrush
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 595. Mentioned on page 578.

Herbs, perennial, 1.4–3 dm; from a woody caudex; with a taproot. Stems several, erect to ascending, unbranched, sometimes branched, glabrous or hairs spreading, short and long, ± stiff, sometimes stipitate-glandular especially distally. Leaves green, narrowly to broadly lanceolate, (1–) 2–5 (–6) cm, not fleshy, margins plane, flat or involute, (0–) 3 (–5) -lobed, apex acute to rounded; lobes erect or ascending, linear, lanceolate, or triangular, sometimes very small, apex acute to rounded. Inflorescences 3–6 × 2–4 cm; bracts proximally greenish, distally pale orange or pale-yellow, sometimes red-orange, lanceolate or narrowly elliptic to ovate, sometimes obovate, 3–5-lobed; lobes ascending, linear, medium length to long, arising at or below mid length, apex acute to obtuse. Calyces colored as bracts, 17–22 (–24) mm; abaxial clefts 9–12 (–13) mm, adaxial 7–11 mm, clefts 50% of calyx length, deeper than laterals, lateral 2–6.5 (–8.5) mm, 20–50% of calyx length; lobes lanceolate to narrowly lanceolate, apex acute to obtuse. Corollas straight, 20–30 mm; tube 12–19 mm; beak exserted, adaxially green, 7–12 mm; abaxial lip green, reduced, included or visible through cleft, 1.5–2 mm, 10–20% as long as beak; teeth incurved, deep green, 1.5 mm.


Phenology: Flowering Jun–Jul.
Habitat: Gentle slopes, mostly northern aspect, in herbaceous or grassy subalpine to alpine meadows, sagebrush openings and swales, snowbank communities, over quartzite.
Elevation: 2100–2900 m.

Discussion

Castilleja christii is endemic to subalpine meadows near the summit of Mt. Harrison in the Albion Mountains, Cassia County. Morphologically, it most closely resembles the widespread C. hispida var. acuta, but a recent molecular study (D. L. Clay et al. 2012) presents clear evidence for a homoploid hybrid origin for the species, incorporating portions of the genomes of C. linariifolia and C. miniata. This is the first documented case of homoploid origin in Castilleja.

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

Selected References

None.

Lower Taxa

None.

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

... more about "Castilleja christii"
1.2 cm12 mm <br />0.012 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Acute (?) +  and Obtuse (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
N. H. Holmgren +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
not +, leathery +  and fleshy +
red-orange;pale-yellow;pale orange;greenish +
3-5-lobed +, obovate +, narrowly elliptic +  and ovate +
2.2 cm22 mm <br />0.022 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
2-lobed +, lobed +  and tubular +
1.7 cm17 mm <br />0.017 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
John Christ’s paintbrush +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
2100–2900 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Gentle slopes, mostly northern aspect, in herbaceous or grassy subalpine to alpine meadows, sagebrush openings and swales, snowbank communities, over quartzite. +
much-branched +, unbranched +  and eglandular +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
deciduous +
basal +  and cauline +
lanceolate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
not fleshy +
below mid below mid lobes +, arising +, ascending +  and erect +
3 +, 2 +  and 4 +
lanceolate +  and narrowly lanceolate +
(0-)3(-5)-lobed +, involute +, flat +  and plane +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering Jun–Jul. +
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 +
erect +  and ascending +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja christii +
Castilleja +
species +
reduced +
1.5 cm15 mm <br />0.015 m <br /> (?) +
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +