Castilleja purpurascens

Greenman

Bot. Gaz. 42: 146. 1906.

EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 649. Mentioned on page 580, 606.

Herbs, perennial, (1.5–) 2–4 dm; from a woody caudex; with branched, woody roots. Stems few or several, ascending to erect, branched or unbranched, shiny proximally, glabrous proximally, hairy distally, hairs spreading, long, soft, eglandular, sometimes sparsely glandular. Leaves deep purple to green, linear-lanceolate to narrowly lanceolate, rarely broadly lanceolate, 1.5–4.5 cm, not fleshy, margins plane, flat or slightly involute, 0 (–3) -lobed, apex usually acuminate or acute; lobes upright or ascending, lanceolate, apex acute. Inflorescences 2–12 × 2–6 cm; bracts deep reddish or crimson, rarely magenta or dull orange, or proximally greenish near base, distally colored as above, oblong to broadly lanceolate, often spreading from base and exposing calyces, 0–3 (–5) -lobed; lobes ascending to erect, linear, short to medium length, arising near or above mid length, apex acute to obtuse. Calyces colored as bracts, 18–28 mm; abaxial clefts 5–6 mm, adaxial 8–15 mm, clefts 28–50% of calyx length, deeper than laterals, lateral 1.5–6 mm, 5–25% of calyx length; lobes long-triangular, apex acute. Corollas straight to slightly curved, 20–37 mm; tube 12–21 mm; abaxial lip sometimes exserted, beak exserted; beak adaxially green, 10–16 mm; abaxial lip green, sometimes yellow, usually reduced, protruding through abaxial cleft, sometimes a little pouched, 3-lobed, 2–6 mm, 17–45% as long as beak; teeth erect, green, whitish, or yellow, 1–1.5 mm. 2n = 48.


Phenology: Flowering (May–)Jun–Jul.
Habitat: Gravel river flats, moist thickets.
Elevation: 1200–2200 m.

Discussion

Castilleja purpurascens is a species of gravelly flood plains and riverbanks at moderate elevations in the vicinity of the Kicking Horse River in Yoho National Park, British Columbia, and in immediately adjacent Alberta. While this tetraploid species may be derived from hybridization between C. miniata and C. rhexiifolia, its combination of traits is unique, and the species forms morphologically consistent populations limited to a habitat not particularly favored by either putative parent species. Very occasional hybrids are known with both C. lutescens and C. miniata.

Selected References

None.

Lower Taxa

None.

"arising" is not a number.

... more about "Castilleja purpurascens"
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
yellow +  and green +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Acute (?) +  and Obtuse (?) +
J. Mark Egger +, Peter F. Zika +, Barbara L. Wilson +, Richard E. Brainerd +  and Nick Otting +
Greenman +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
not +, leathery +  and fleshy +
colored;greenish;orange;dull;magenta;crimson;reddish;greenish;orange;dull;magenta;crimson;reddish;greenish;orange;dull;magenta;crimson;reddish;deep +
0-3(-5)-lobed +, oblong +  and broadly lanceolate +
2-lobed +, lobed +  and tubular +
1.8 cm18 mm <br />0.018 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
taprooted;fibrous-rooted or rhizomatous +
fleshy +  and woody +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
purple +, pink +, red +, orange +, yellow +, white +, green +  and pale greenish +
straight +  and slightly curved +
2 cm20 mm <br />0.02 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Alta. +  and B.C. +
1200–2200 m. +
spreading-hairy +  and glabrous +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Gravel river flats, moist thickets. +
stipitate-glandular +
axillary +  and terminal +
spiral +, whorled +, alternate +  and opposite +
purple +  and green +
deciduous +
basal +  and cauline +
lanceolate;linear-lanceolate;narrowly lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
not fleshy +
ascending +  and erect +
3 +, 2 +  and 4 +
long-triangular +  and lanceolate +
subequal +
0(-3)-lobed +, involute +, flat +  and plane +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering (May–)Jun–Jul. +
20 +  and 100 +
trapezoidal +, oblong-ovoid +, pyramidal +  and ovoid +
Endemic +  and Conservation concern +
non-secund +  and secund +
elongate +
subequal +
unbranched +  and branched +
sprawling +  and prostrate +
aerial +  and subterranean +
ascending +  and erect +
several;few +
not fleshy +
2-lobed +  and entire +
Euchroma +  and Oncorhynchus +
Castilleja purpurascens +
Castilleja +
species +
yellow +, whitish +  and green +
shallow;deep +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +