Castilleja xanthotricha

Pennell

Notul. Nat. Acad. Nat. Sci. Philadelphia 74: 5. 1941.

Common names: John Day or yellow-hairy paintbrush
Endemic
Treatment appears in FNA Volume 17. Treatment on page 665. Mentioned on page 573, 577.

Herbs, perennial, 1–2 (–3.8) dm; from a woody caudex; with a taproot. Stems few to several, ± decumbent to erect or ascending, unbranched, sometimes with short, leafy axillary shoots, hairs erect to spreading, long, soft, eglandular, mixed with short-stipitate-glandular ones. Leaves green, linear, lanceolate to broadly lanceolate, oblong, or cuneate, 0.8–5 cm, not fleshy, margins plane to wavy, involute, 0–5-lobed, apex acute, sometimes rounded; lobes spreading, linear, arising below mid length, nearly as broad as center lobe, apex acute. Inflorescences 3–14 × 1.5–4.5 cm; bracts proximally greenish, rarely dull reddish purple, distally white to cream, rarely pale-yellow or dull, pale-pink (sharply differentiated from proximal coloration), lanceolate or oblong to narrowly ovate, (3–) 5–7-lobed; lobes ascending, linear to obovate, ± broadened distally, medium, long, proximal lobes arising below mid length, central lobe apex broadly rounded to truncate, others acute to rounded. Calyces colored as bracts, 15–26 mm; abaxial and adaxial clefts 3.5–7 mm, 25–50% of calyx length, deeper than laterals, lateral 2–5 mm, 12–25% of calyx length; lobes linear, oblong, or narrowly triangular, center lobe apex usually rounded, lobes acute to rounded. Corollas curved, 17–23 mm; tube 15–19 mm; beak exserted, adaxially green, 5–8 (–9) mm, puberulent, stipitate-glandular; abaxial lip deep purple (color sometimes visible through calyx), green, pinkish, or pale-yellow, ± prominent, slightly inflated, usually hidden in calyx, sometimes right at top of calyx, 2 mm, ca. 50% as long as beak; teeth ascending, whitish, yellowish, pink, or green, 1–1.5 mm. 2n = 48.


Phenology: Flowering Apr–Jul.
Habitat: Arid, rocky, sandy, or clay slopes of basaltic origin, sagebrush steppes.
Elevation: 400–800 m.

Discussion

Castilleja xanthotricha is endemic to moderate elevations in the sagebrush hills of the John Day River drainage in north-central Oregon. N. H. Holmgren (1971) hypothesized that this tetraploid species is of allopolyploid hybrid origin between C. glandulifera and C. oresbia.

Selected References

None.

Lower Taxa

None.

"acute" is not a number.

... more about "Castilleja xanthotricha"
pale-yellow +, pinkish +, green +, purple +  and deep +
hidden +  and prominent +
2 cm20 mm <br />0.02 m <br /> (?) +
Rounded (?) +  and Acute (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
Pennell +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
stipitate-glandular +  and puberulent +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not +, leathery +  and fleshy +
pale-pink;pale-yellow;distally white;cream +
(3-)5-7-lobed +, oblong +  and narrowly ovate +
lateral +  and deeper +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-lobed +, lobed +  and tubular +
1.5 cm15 mm <br />0.015 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
John Day or yellow-hairy paintbrush +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
1.7 cm17 mm <br />0.017 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
400–800 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Arid, rocky, sandy, or clay slopes of basaltic origin, sagebrush steppes. +
erect +  and spreading +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
deciduous +
basal +  and cauline +
lanceolate;broadly lanceolate oblong or cuneate +
0.8 cm8 mm <br />0.008 m <br /> (5 cm50 mm <br />0.05 m <br />) +
not fleshy +
ascending +, arising +  and spreading +
3 +, 2 +  and 4 +
acute +  and rounded +
medium +
broadened +
0-5-lobed +, plane +  and wavy +
short-stipitate-glandular +
acute;rounded +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering Apr–Jul. +
Notul. Nat. Acad. Nat. Sci. Philadelphia +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
non-secund +  and secund +
elongate +
subequal +
sprawling +  and prostrate +
aerial +  and subterranean +
less decumbent +  and erect or ascending +
few;several +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja xanthotricha +
Castilleja +
species +
green +, pink +, yellowish +  and whitish +
shallow;deep +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +