Synonyms: Castilleja laxa A. Gray C. setosa Pennell
Treatment appears in FNA Volume 17. Treatment on page 660. Mentioned on page 656.

Herbs or subshrubs, perennial, 1.8–6 dm; from a woody caudex; with a taproot. Stems few-to-many, erect or ascending, unbranched, sometimes branched, hairs dense, spreading to ±reflexed, short, ± stiff, eglandular. Leaves erect to ± reflexed, green to sometimes purple, lanceolate to linear-lanceolate, 2–3 (–4) cm, not fleshy, margins plane, flat to slightly involute, 0 (–3) -lobed, apex acute to acuminate; lobes spreading, linear, narrowly triangular, short, apex acute. Inflorescences 3–11 × (2.5–) 5–7 cm; bracts red or green throughout, rarely light orange or light yellow throughout, or proximally greenish, distally colored as above, less showy than calyces, lanceolate, 0 (–3) -lobed; lobes erect, linear or lanceolate-acuminate, short, arising near apex, apex acute. Calyces entirely red or proximally green, distally red, light orange, or light yellow, 27–35 (–40) mm; abaxial clefts 12–18 mm, adaxial 8–14 mm, abaxial 55–60% of calyx length, adaxial 20–35% of calyx length, deeper than laterals, lateral 0 (–2.5) mm, 0 (–7) % of calyx length; lobes linear to lanceolate to broadly triangular, apex rounded to emarginate or acute. Corollas straight or slightly curved, 36–47 mm; tube 18–25 mm; abaxial lip often exserted, beak exserted; beak adaxially whitish, yellow to green, or reddish, 15–26 (–30) mm; abaxial lip green to yellow or white, reduced, protruding through abaxial cleft, 1–2 mm, ca. 8% as long as beak; teeth incurved, white or deep green, 0.5–1 mm. 2n = 24, 48.


Phenology: Flowering Mar–Nov(–Dec).
Habitat: Open pine-oak woodlands, rocky slopes, ledges, chaparral, quartzite and other bedrock types.
Elevation: 700–2500 m.

Discussion

Variety tenuiflora is fairly common in the southern Sky Island ranges of southeastern Arizona and occurs in the Animas Mountains of Hidalgo County, southwestern New Mexico. It is also found throughout much of Mexico, where it is the most common species of Castilleja.

Selected References

None.

Lower Taxa

None.

1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
green +  and yellow or white +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
lateral +  and deeper +
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
Bentham +
2.6 cm26 mm <br />0.026 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
not +, leathery +  and fleshy +
colored;greenish;light yellow;light orange;green;red +
0(-3)-lobed +  and lanceolate +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
light yellow +, light orange +, red +  and green +
2-lobed +, lobed +  and tubular +
2.7 cm27 mm <br />0.027 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
curved +  and straight +
3.6 cm36 mm <br />0.036 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
Ariz. +, N.Mex. +  and Mexico +
700–2500 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Open pine-oak woodlands, rocky slopes, ledges, chaparral, quartzite and other bedrock types. +
spreading +  and more or less reflexed +
stipitate-glandular +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
green to sometimes +
deciduous +
basal +  and cauline +
lanceolate;linear-lanceolate +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not fleshy +
arising +, erect +  and spreading +
3 +, 2 +  and 4 +
linear +  and lanceolate +
subequal +
0(-3)-lobed +, flat +  and slightly involute +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering Mar–Nov(–Dec). +
Pl. Hartw., +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
Illustrated +
non-secund +  and secund +
elongate +
subequal +
branched +  and unbranched +
sprawling +  and prostrate +
aerial +  and subterranean +
ascending +  and erect +
not fleshy +
2-lobed +  and entire +
Castilleja laxa +  and C. setosa +
Castilleja tenuiflora var. tenuiflora +
Castilleja tenuiflora +
variety +
green +, deep +  and white +
shallow;deep +
reduced +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
subshrub +  and herb +