Difference between revisions of "Castilleja arachnoidea"
Bot. Gaz. 53: 510. 1912.
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|name=Castilleja arachnoidea subsp. shastensis | |name=Castilleja arachnoidea subsp. shastensis | ||
|authority=Pennell | |authority=Pennell | ||
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|name=C. eastwoodiana | |name=C. eastwoodiana | ||
|authority=Pennell | |authority=Pennell | ||
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|name=C. filifolia | |name=C. filifolia | ||
|authority=Eastwood | |authority=Eastwood | ||
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|name=C. payneae | |name=C. payneae | ||
|authority=Eastwood | |authority=Eastwood | ||
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|name=C. pumicicola | |name=C. pumicicola | ||
|authority=Pennell | |authority=Pennell | ||
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}} | }} | ||
|hierarchy=Orobanchaceae;Castilleja;Castilleja arachnoidea | |hierarchy=Orobanchaceae;Castilleja;Castilleja arachnoidea | ||
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|elevation=1300–3300 m. | |elevation=1300–3300 m. | ||
|distribution=Calif.;Nev.;Oreg. | |distribution=Calif.;Nev.;Oreg. | ||
| − | |discussion=<p>Castilleja arachnoidea is a remarkably variable species in form and color, but inflorescence colors are often uniform within a population. It is sometimes confused with C. schizotricha, but the two differ in stature, lobing of the leaves and bracts, bract coloration, and inflation of the abaxial lip. They are easily separated by the simple hairs and pale yellow to brick red inflorescences of C. arachnoidea, compared to the pink-purple to deep purple inflorescences and branched hairs of C. schizotricha.</p><!-- | + | |discussion=<p><i>Castilleja arachnoidea</i> is a remarkably variable species in form and color, but inflorescence colors are often uniform within a population. It is sometimes confused with <i>C. schizotricha</i>, but the two differ in stature, lobing of the leaves and bracts, bract coloration, and inflation of the abaxial lip. They are easily separated by the simple hairs and pale yellow to brick red inflorescences of <i>C. arachnoidea</i>, compared to the pink-purple to deep purple inflorescences and branched hairs of <i>C. schizotricha</i>.</p><!-- |
| − | --><p>The names Castilleja eastwoodiana and C. filifolia represent yellow color forms of C. arachnoidea. A race on the pumice plains of Mt. Shasta in the Cascade Range in California is distinctive.</p> | + | --><p>The names <i>Castilleja</i> eastwoodiana and <i>C. filifolia</i> represent yellow color forms of <i>C. arachnoidea</i>. A race on the pumice plains of Mt. Shasta in the Cascade Range in California is distinctive.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Castilleja arachnoidea | name=Castilleja arachnoidea | ||
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|authority=Greenman | |authority=Greenman | ||
|rank=species | |rank=species | ||
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|publication title=Bot. Gaz. | |publication title=Bot. Gaz. | ||
|publication year=1912 | |publication year=1912 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_1032.xml |
|genus=Castilleja | |genus=Castilleja | ||
|species=Castilleja arachnoidea | |species=Castilleja arachnoidea | ||
Latest revision as of 19:24, 5 November 2020
Herbs, perennial, 0.6–2(–3) dm; from branched, sometimes elongate, creeping basal stems; with a taproot. Stems solitary or few to many, decumbent-ascending, unbranched, sometimes branched, hairs dense, reflexed-spreading, matted, long, soft, unbranched, eglandular, white-woolly. Leaves green to purple or steel gray, lanceolate-linear or narrowly lanceolate, (1–)2–4(–6) cm, not fleshy, margins plane, involute, 3(–5)-lobed, apex acute; lobes spreading, linear to lanceolate, apex acute to rounded. Inflorescences erect to ascending, 3–12 × 1–2.5 cm; bracts proximally greenish to dull reddish brown, rarely dull red or dull orange, distally dull red, deep rusty red, or yellow to pale yellow, sometimes deep pink, dull rose, pale salmon, or dull light orange, rarely green, dull reddish, or dull orange throughout, aging browner and/or more orange, lanceolate or elliptic-lanceolate to obovate, (0–)3–5-lobed; lobes usually ascending, linear, lanceolate, oblanceolate, or spatulate, long, arising near or below mid length, central lobe apex rounded to truncate, others obtuse to rounded. Calyces colored as bracts, proximal part sometimes paler, (10–)12–19 mm; abaxial and adaxial clefts 4–8(–10) mm, 33–50% of calyx length, all 4 clefts subequal; lobes linear to lanceolate, apex acute. Corollas straight or ± curved, 12–20 mm; tube 9–15 mm; beak subequal to calyx or slightly exserted, adaxially green or yellow-green, (2–)3–5 mm, ± densely puberulent, hairs often crisped; abaxial lip yellow, greenish, pink, or red-violet, moderately conspicuous, exserted to barely included in calyx; pouches shallow, prominent, 2–4 mm, ca. 100% as long as beak; teeth erect, red, pink, or pale yellow, 1 mm. 2n = 24.
Phenology: Flowering (May–)Jun–Aug(–Sep).
Habitat: Pumice flats, sandy, gravelly, or rocky slopes, ridges and open summits.
Elevation: 1300–3300 m.
Distribution
Calif., Nev., Oreg.
Discussion
Castilleja arachnoidea is a remarkably variable species in form and color, but inflorescence colors are often uniform within a population. It is sometimes confused with C. schizotricha, but the two differ in stature, lobing of the leaves and bracts, bract coloration, and inflation of the abaxial lip. They are easily separated by the simple hairs and pale yellow to brick red inflorescences of C. arachnoidea, compared to the pink-purple to deep purple inflorescences and branched hairs of C. schizotricha.
The names Castilleja eastwoodiana and C. filifolia represent yellow color forms of C. arachnoidea. A race on the pumice plains of Mt. Shasta in the Cascade Range in California is distinctive.
Selected References
None.