Castilleja attenuata |
Castilleja schizotricha |
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attenuate Indian paintbrush, attenuate paintbrush, narrow-leaf owl's-clover, narrow-leaf owl-clover, narrow-leaf paintbrush, valley-tassels |
split hair Indian paintbrush, split-hair paintbrush |
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Habit | Herbs, annual, 1–4.5 dm; with fibrous roots. | Herbs, perennial, 0.8–1.5 dm; from a woody caudex; with a taproot. |
Stems | solitary, erect to ascending, unbranched, sometimes branched from base, hairs spreading, short and medium, ± stiff, eglandular. |
few to many, ascending to erect, unbranched, hairs dense, appressed-ascending, matted, long, soft, branched, eglandular, ± white-woolly, obscuring surface. |
Leaves | green to purple-tinged, linear to linear-lanceolate, (1–)2–8 cm, not fleshy, margins plane, flat, 0(–5)-lobed, apex acuminate; lobes spreading to ascending, filiform to lanceolate, apex sometimes acuminate. |
gray-green with hairs, surface green to purple, linear-lanceolate, 0.5–2 cm, not fleshy, margins plane, ± involute, 0(–3)-lobed, apex acute to acuminate, sometimes rounded; lobes sometimes divergent, spreading-ascending, narrowly linear, apex acute. |
Inflorescences | (1.5–)2–10(–19, –30 in fruit) × 1–2 cm; bracts proximally green to pale brown, rarely dull reddish brown, distally white on apices, sometimes pale yellow or pale pink-purplish on apices, rarely greenish or dull reddish brown throughout, lanceolate or lanceolate-elliptic, 3(–5)-lobed; lobes ascending, linear to lanceolate, long, arising below mid length, apex acuminate, acute, or obtuse. |
3–8 × 1–2 cm; bracts purple, lavender, pinkish, or dusty red throughout, sometimes greenish throughout or proximally greenish, distally colored as above, obscured by hairs, lanceolate, 3(–5)-lobed; lobes ascending to erect, linear to oblanceolate, short, arising near or above mid length, apex obtuse. |
Corollas | straight, 10–25 mm; tube 9–20 mm, not expanded distally; beak exserted, straight, adaxially white, light yellow, or greenish, 3–5 mm, inconspicuously puberulent; abaxial lip white or yellow with deep brown to purple spots, often becoming pink, slightly inflated, exserted or not, pouches 3, 2 mm wide, 1–1.5 mm deep, 3–4 mm, 75–80% as long as beak; teeth erect, white, pale yellow, or pink, 0.5–1.2 mm. |
straight, 15–20 mm; tube 8–9 mm; beak included to slightly exserted, adaxially purple or pink, 3.9–5 mm, densely puberulent with white, woolly hairs; abaxial lip deep purple, inconspicuous, pouched, pouches shallow, 3–5 mm, 80–100% as long as beak; teeth upright-ascending, reduced, appearing white, 1.5–2 mm. |
Calyces | colored as bracts, (8–)15–23 mm; abaxial and adaxial clefts (4–)6–8 mm, abaxial ca. 50% of calyx length, adaxial ca. 75% of calyx length, lateral 3–3.5 mm, 33% of calyx length; lobes linear to narrowly triangular, apex acute to acuminate. |
colored as bracts, 11–18 mm; abaxial and adaxial clefts 3.5–6 mm, 33–50% of calyx length, all 4 clefts subequal, lateral 4–6 mm, 33–50% of calyx length; lobes linear, apex acute. |
Filaments | glabrous. |
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2n | = 24. |
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Castilleja attenuata |
Castilleja schizotricha |
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Phenology | Flowering (Feb–)Mar–Jun. | Flowering Jul–Aug. |
Habitat | Grasslands, pastures, moist margins of springs and streams, damp rocky slopes. | Meadows, ledges, rocky or gravelly slopes, subalpine to alpine, marble, granite, or serpentine substrates. |
Elevation | 0–2100 m. (0–6900 ft.) | 1600–2600 m. (5200–8500 ft.) |
Distribution |
AZ; CA; OR; WA; BC; Mexico (Baja California); South America (Chile)
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CA; OR
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Discussion | Castilleja attenuata is a common and widespread species, ranging from southwestern Canada to northern Baja California, with several disjunct populations in central Chile. It is sensitive to competition from weeds. Disjunct populations in the Rincon Mountains in Pima County, Arizona, often have pink bracts but are otherwise typical. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja schizotricha is a rare species restricted to high elevations in the mountains in Siskiyou and Trinity counties in northwestern California and in Jackson and western Klamath counties in southwestern Oregon. See the discussion of 6. C. arachnoidea for morphological differences between it and C. schizotricha, as the two are sometimes confused. Though their ranges overlap, they do not appear to hybridize. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 590. | FNA vol. 17, p. 655. |
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja |
Sibling taxa | ||
Synonyms | Orthocarpus attenuatus | C. arachnoidea subsp. schizotricha |
Name authority | (A. Gray) T. I. Chuang & Heckard: Syst. Bot. 16: 656. (1991) | Greenman: Bot. Gaz. 53: 511. (1912) |
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