Castilleja rubicundula

(Jepson) T. I. Chuang & Heckard

Syst. Bot. 16: 658. 1991.

Endemic
Basionyms: Orthocarpus rubicundulus Jepson Man. Fl. Pl. Calif., 943. 1925
Treatment appears in FNA Volume 17. Treatment on page 652. Mentioned on page 569, 585, 618.

Herbs, annual, 0.6–6 dm; with a taproot or branched root system. Stems solitary, erect, unbranched, sometimes branched, hairs spreading, short, soft, often mixed with stipitate-glandular ones. Leaves green to purple-tinged or dark redbrown, linear-lanceolate or distal lanceolate, 2–8 (–9) cm, not fleshy, margins plane, flat to slightly curved up, 0–7-lobed, apex acute to acuminate; lobes widely spreading or ascending-spreading, linear, apex acute. Inflorescences 2.5–24 × 3–4 cm; bracts green throughout, lanceolate to ovate, 5–9-lobed; lobes ascending, linear-lanceolate or lanceolate, medium length, arising near mid length, apex acute to acuminate. Calyces green, 8–14 mm; abaxial and adaxial clefts 3–6 mm, 30–50% of calyx length, all 4 clefts subequal; lobes linear, apex acuminate to acute. Corollas straight, (15–) 20–28 mm; tube 8–24 mm; abaxial lip, beak, and proximal part of corolla-tube exserted; beak adaxially white, rarely very pale-yellow or pale pink-purple, 5–7 mm, inconspicuously puberulent; abaxial lip white, fading to pink to pink-purple, or yellow, fading to white, rarely then to pink or pink-purple, both forms often with purple or red dots at base, inflated, prominent, pouches 3, 8–10 mm wide, 4–6 mm deep, 4–6 mm, 80–100% as long as beak; teeth erect, white or yellow, 0.5 mm. Stigmas ± exserted, as long as or slightly longer than beak and visible from abaxial side. 2n = 24.

Discussion

Varieties 2 (2 in the flora).

Castilleja rubicundula is separated into two varieties on the basis of flower color, as well as subtle differences in the pouching of the abaxial corolla lip. The ranges of the two varieties are broadly overlapping, but they never grow in the same location. Few intermediate forms have been recorded, though a very unusual population system exists in Santa Clara County, within which virtually all plants exhibit a tricolored corolla sequence, with yellow flowers aging to white and then pink or pink-purple, with all three colors visible on mature inflorescences.

Selected References

None.

Key

1 Abaxial lips of corollas white, in most populations quickly fading to pink or pink-purple. Castilleja rubicundula var. rubicundula
1 Abaxial lips of corollas light to bright yellow, in some populations quickly fading to white, then rarely to pink or pink-purple. Castilleja rubicundula var. lithospermoides

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

... more about "Castilleja rubicundula"
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
red dots +, purple +, fading +  and pink +
Acuminate (?) +  and Acute (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
(Jepson) T. I. Chuang & Heckard +
Orthocarpus rubicundulus +
puberulent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not +, leathery +  and fleshy +
5-9-lobed +, lanceolate +  and ovate +
2-lobed +, lobed +  and tubular +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
subequal +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
2 cm20 mm <br />0.02 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Calif. +  and Oreg. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
much-branched +, unbranched +  and eglandular +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
8 cm80 mm <br />0.08 m <br /> (9 cm90 mm <br />0.09 m <br />) +
green +  and purple-tinged or dark redbrown +
deciduous +
basal +  and cauline +
lanceolate;distal;linear-lanceolate +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not fleshy +
arising +, ascending +, ascending-spreading +  and spreading +
3 +, 2 +  and 4 +
lanceolate +  and linear-lanceolate +
subequal +
0-7-lobed +  and plane +
stipitate-glandular +
tenuinucellate +  and unitegmic +
campylotropous-like +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
non-secund +  and secund +
elongate +
subequal +
branched +  and unbranched +
sprawling +  and prostrate +
aerial +  and subterranean +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja rubicundula +
Castilleja +
species +
yellow +  and white +
shallow;deep +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (?) +
0.8 cm8 mm <br />0.008 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +