Castilleja chromosa |
Castilleja parviflora |
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desert paintbrush |
magenta paintbrush, mountain Indian paintbrush, mountain or rosy or small-flower paintbrush, small-flower paintbrush |
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Habit | Herbs, sometimes subshrubs, perennial, 1.5–3.5(–4.5) dm; from a woody caudex; with a taproot. | Herbs, perennial, (0.6–)1–4(–5) dm; from a woody caudex; with a taproot or stout, branched roots. | ||||||||||||
Stems | several to many, ascending to erect, often grayish, unbranched, rarely branched, sometimes with short, leafy axillary branches, hairs spreading-erect, long, stiff, eglandular, sometimes also with shorter, stipitate-glandular ones. |
several or many, erect or ascending, unbranched except for short, leafy axillary shoots, glabrate proximally, hairy distally, hairs sparse, spreading, ± matted, long, soft, minute-glandular. |
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Leaves | gray-green, linear, lanceolate, or oblanceolate, sometimes broadly lanceolate, (1.5–)2.5–6(–7) cm, not fleshy, margins plane, involute, (0–)3–5(–7)-lobed, sometimes with secondary lobes, apex acuminate to obtuse; lobes spreading, linear, apex acuminate. |
green or gray-green to purple-tinged or deep purple, often blackening on drying, narrowly to broadly lanceolate or elliptic, rarely linear, 1.5–5 cm, not fleshy, margins plane, sometimes ± wavy, flat, (0–)3–9-lobed, apex acute to acuminate or obtuse; lobes spreading or ascending, linear, sometimes lanceolate, much narrower than terminal lobe, evenly spaced, short, apex acute. |
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Inflorescences | 2.5–15 (much longer in fruit) × 1.5–5.5 cm; bracts proximally greenish to dull purplish, distally bright red to scarlet or orange-red, rarely yellowish to dull orange or pink, narrowly to broadly linear or lanceolate, narrowly ovate, or oblong-lanceolate, (0–)3–7-lobed, rarely with secondary lobes; lobes spreading, linear to oblong, sometimes oblanceolate, often expanded near tip, long, proximal lobes arising below mid length, apex rounded or obtuse to sometimes acute. |
2–16 × 1–3.5 cm; bracts proximally greenish, dull, deep purple, or reddish purple, distally pink, pink-purple, magenta, deep rose, crimson, cream, or white, sometimes red, pale orange, or red-orange, lanceolate to broadly elliptic or ovate, 3–7-lobed; lobes spreading to ascending, linear, lanceolate, or lanceolate-acuminate, short to medium length, arising at or near mid length, apex obtuse to acute, central lobes sometimes rounded. |
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Corollas | straight or ± curved, 18–35(–40) mm; tube 8–15 mm; beak short- or long-exserted, adaxially green to yellow-green, (9–)10–18 mm; abaxial lip deep green, reduced, thickened, included to exserted, 2–3 mm, ca. 20% as long as beak; teeth incurved, deep green, 0.5–1 mm. |
straight or slightly curved, 12–30 mm; tube 8–19 mm; beak exserted or subequal to calyx, adaxially green-yellowish or red, 5.5–11 mm; abaxial lip green, brown, or yellow, sometimes purple, reduced, slightly or not inflated and pouched, 1–3 mm, 20–45% as long as beak; teeth erect, green, white, yellow, pink, or red, 0.5–2 mm. |
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Calyces | colored as bracts, sometimes with broad yellow band below colored lobe apices, (17–)20–27 mm; abaxial clefts 4–10 mm, adaxial 6–12 mm, abaxial ca. 30% of calyx length, adaxial ca. 40% of calyx length, deeper than laterals, lateral 1–4 mm, ca. 15% of calyx length; lobes oblong or ovate to narrowly triangular or lanceolate, apex obtuse to rounded. |
colored as bracts, 12–28 mm; abaxial and adaxial clefts 6–15 mm, 40–70% of calyx length, deeper than laterals, lateral 1–8 mm, 10–35% of calyx length; lobes narrowly to broadly triangular, sometimes distally expanded and flaring, petaloid, apex obtuse or acute, sometimes rounded. |
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2n | = 24, 48. |
= 24, 48. |
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Castilleja chromosa |
Castilleja parviflora |
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Phenology | Flowering (Feb–)Mar–Aug(–Nov). | |||||||||||||
Habitat | Dry sagebrush slopes and flats, pinyon-juniper stands, blackbrush, open yellow pine forests. | |||||||||||||
Elevation | 500–3200 m. (1600–10500 ft.) | |||||||||||||
Distribution |
AZ; CA; CO; ID; NM; NV; OR; UT; WY
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AK; OR; WA; AB; BC; YT
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Discussion | Castilleja chromosa is sometimes confused with 3b. C. angustifolia var. dubia (see discussion there). Castilleja chromosa retains its distinctive morphology across its wide range and is a characteristic species of much of the southwestern United States. Where it overlaps with C. angustifolia, the two are distinguished by inflorescence color and width and by the lengths of the calyx, corolla, and corolla beak. In the broad region of their sympatry, there is little evidence of intergradation, except in a few sites in Elko County, Nevada, and in southern Wyoming. Throughout southern Idaho and northeastern Nevada the range of the two overlap with little or no intergradation. At high elevations in Montrose County, Colorado, C. chromosa has narrower leaves and a longer and silkier pubescence, especially in the inflorescence. Apparent hybrids between C. chromosa and C. flava var. rustica are known from Custer County, Idaho, and hybrids with C. linariifolia are known from Montrose County, Colorado. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 4 (4 in the flora). Castilleja parviflora is a complex, geographically widespread, and often misunderstood species ranging from southeastern Alaska through much of British Columbia, southwestern Yukon, and the Rocky Mountains of extreme western Alberta and southward in the Cascade Range to central Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 595. | FNA vol. 17, p. 640. | ||||||||||||
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja | ||||||||||||
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Synonyms | C. ewanii, C. martini subsp. ewanii, C. martini var. ewanii | |||||||||||||
Name authority | A. Nelson: Bull. Torrey Bot. Club 26: 245. (1899) — (as Castilleia) | Bongard: Mém. Acad. Imp. Sci. St.-Pétersbourg, sér. 6, Sci. Math. 2(2): 158. (1832) | ||||||||||||
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