Castilleja densiflora var. obispoënsis

(D. D. Keck) J. M. Egger

Phytologia 90: 69. 2008.

Common names: San Luis Obispo owl’s-clover
EndemicConservation concern
Basionyms: Orthocarpus densiflorus var. obispoënsis D. D. Keck Proc. Calif. Acad. Sci., ser. 4, 16: 539. 1927
Synonyms: Castilleja densiflora subsp. obispoënsis (D. D. Keck) T. I. Chuang & Heckard
Treatment appears in FNA Volume 17. Treatment on page 602. Mentioned on page 601, 603.

Herbs 0.7–1.2 dm. Stems: hairs spreading, medium length, ± stiff. Leaves linear-lanceolate, 1.4–6 cm, 0 (–5) -lobed. Inflorescences 1.5–7 cm; bracts distally white on apices, rarely pale-yellow. Calyces (8–) 15–20 mm; abaxial clefts 7–10.5 mm, adaxial 12 mm, abaxial 33–50% of calyx length, adaxial ca. 50% of calyx length, all 4 clefts subequal, lateral 5–7 mm, 33% of calyx length. Corollas 14–22 mm; beak adaxially white, aging light pink; abaxial lip proximally creamy white or yellow-green (becoming light pink with age), distally yellow (becoming orange with age), with small purple spot, pouches appearing moderately inflated, widened gradually, longer than deep, deeply pouched (less so than var. gracilis), 4.5–7 mm.


Phenology: Flowering Apr–May.
Habitat: Coastal grasslands, springs, roadsides, pastures.
Elevation: 0–500 m.

Discussion

Variety obispoënsis is white-bracted and is mostly limited to the coastal plain in San Luis Obispo County, where it is threatened by development. It can resemble Castilleja attenuata, but the spikes of var. obispoënsis are considerably wider, and the abaxial lip of the corolla is more inflated and conspicuous.

Selected References

None.

Lower Taxa

None.

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

0.7 cm7 mm <br />0.007 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
yellow +, yellow-green +  and creamy white +
12 cm120 mm <br />0.12 m <br /> (?) +
Acute (?) +  and Acuminate (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(D. D. Keck) J. M. Egger +
Orthocarpus densiflorus var. obispoënsis +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
straight +
puberulent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not +, leathery +  and fleshy +
pale-yellow;white +
3-5-lobed +  and lanceolate +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
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 +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
San Luis Obispo owl’s-clover +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
1.4 cm14 mm <br />0.014 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0–500 m. +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Coastal grasslands, springs, roadsides, pastures. +
stipitate-glandular +
short to long +
16 cm160 mm <br />0.16 m <br /> (20 cm200 mm <br />0.2 m <br />) +
axillary +  and terminal +
1.5 cm15 mm <br />0.015 m <br /> (7 cm70 mm <br />0.07 m <br />) +
spiral +, whorled +, alternate +  and opposite +
pale green +
deciduous +
basal +  and cauline +
0(-5)-lobed;linear-lanceolate +
1.4 cm14 mm <br />0.014 m <br /> (6 cm60 mm <br />0.06 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 Apr–May. +
deeper than tall +
longer than deep +
inflated +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
Endemic +  and Conservation concern +
non-secund +  and secund +
elongate +
small purple +
subequal +
unbranched +  and branched +
sprawling +  and prostrate +
aerial +  and subterranean +
not fleshy +
2-lobed +  and entire +
Castilleja densiflora subsp. obispoënsis +
Castilleja densiflora var. obispoënsis +
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 +