Endemic
Treatment appears in FNA Volume 17. Treatment on page 602.

Herbs 0.9–4.7 dm. Stems: hairs spreading, long, soft or proximal ones stiff. Leaves linear to broadly lanceolate or ovate, 1.5–8 cm, 0–5-lobed. Inflorescences 2.5–16 (–20) cm; bracts distally pink to pink-purple or reddish purple on apices, sometimes white distally, if white sometimes aging pink. Calyces 8–20 mm; abaxial and adaxial clefts 6.5–15 mm, 75% of calyx length, often deeper than laterals, lateral 6.5–8 mm, 40–60% of calyx length. Corollas 18–29 mm; beak adaxially pink or purple; abaxial lip proximally white, yellow, or purple, often with purple spot in each crease, pouches widened gradually, appearing slightly inflated, longer than deep, 3–7 mm.


Phenology: Flowering Mar–May.
Habitat: Grasslands, forest openings, meadows, roadsides, sometimes on serpentine.
Elevation: 0–2100 m.

Discussion

Variety densiflora usually has a pink to purple inflorescence, although rare individuals in a population may be white; in the San Francisco Bay region, purely white-bracted populations are interspersed among typical populations with pink-purple bracts. This variety differs from the other two varieties in the structure of the abaxial lip of the corolla. In addition, it is distinguished from var. gracilis by a less exserted corolla within a slightly longer calyx and subtending bracts. Within the range of the species, var. densiflora extends a little farther north, and var. gracilis is more common to the south. Confusing intermediates are occasionally found, suggesting possible hybridization with either Castilleja ambigua var. ambigua or C. attenuata. A peculiar form from Inverness, Marin County, was named Orthocarpus noctuinus Eastwood and treated later by some as a hybrid with C. rubicundula var. lithospermoides.

Selected References

None.

Lower Taxa

None.

"acute" is not a number."widened" is not a number.

0.65 cm6.5 mm <br />0.0065 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
purple spot +, purple +, yellow +  and white +
Acute (?) +  and Acuminate (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(Bentham) T. I. Chuang & Heckard +
Orthocarpus densiflorus +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Purple (?) +  and Pink (?) +
straight +
puberulent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not +, leathery +  and fleshy +
pink;white;white;reddish purple;pink to pink-purple;pink +
3-5-lobed +  and lanceolate +
slightly deeper +
0.47 cm4.7 mm <br />0.0047 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-lobed +, lobed +  and tubular +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
subequal +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
1.8 cm18 mm <br />0.018 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
0–2100 m. +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Grasslands, forest openings, meadows, roadsides, sometimes on serpentine. +
stipitate-glandular +
short to long +
16 cm160 mm <br />0.16 m <br /> (20 cm200 mm <br />0.2 m <br />) +
16 cm160 mm <br />0.16 m <br /> (20 cm200 mm <br />0.2 m <br />) +
axillary +  and terminal +
2.5 cm25 mm <br />0.025 m <br /> (16 cm160 mm <br />0.16 m <br />) +
spiral +, whorled +, alternate +  and opposite +
pale green +
deciduous +
basal +  and cauline +
0-5-lobed;linear;broadly lanceolate or ovate +
1.5 cm15 mm <br />0.015 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not fleshy +
arising +  and ascending +
linear +  and narrowly oblanceolate +
subequal +
(0-)3-5-lobed +, involute +, flat +  and plane +
short-stipitate-glandular +
tenuinucellate +  and unitegmic +
campylotropous-like +
blotches +, maroon spots +, yellow +, white +, green becoming light pink +  and purple +
expanded +
Flowering Mar–May. +
deeper than tall +
longer than deep +
inflated +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
non-secund +  and secund +
elongate +
subequal +
unbranched +  and branched +
sprawling +  and prostrate +
aerial +  and subterranean +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja densiflora var. densiflora +
Castilleja densiflora +
variety +
purple spot +, purple +, chartreuse +, white +  and pink +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
expanded +