Castilleja tomentosa |
Castilleja lacera |
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hairy Indian paintbrush, tomentose paintbrush |
cut-leaf owl's clover, cut-leaf paintbrush, cutleaf Indian paintbrush, foothill owl's clover |
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Habit | Herbs or subshrubs, perennial, 1.3–5 dm; from a woody caudex; with a taproot. | Herbs, annual, 0.5–4 dm; with fibrous roots. |
Stems | few to many, ascending to erect, unbranched or branched, with short, leafy axillary shoots, moderately lanate, hairs prostrate to spreading, whitish, unbranched, short, fairly soft, eglandular. |
solitary, erect, unbranched or branched, hairs spreading, long, soft, scattered among more numerous, medium length, stipitate-glandular ones. |
Leaves | green, linear to narrowly lanceolate, (0.8–)3–5 cm, not fleshy, margins plane, strongly involute, 0–3(–5)-lobed, apex acute to rounded; lobes spreading, linear, short, apex acute. |
green or purplish, linear to narrowly lanceolate, 1–5 cm, not fleshy, margins plane, flat, 0–5(–7)-lobed, apex acuminate; lobes spreading to ascending, linear, apex acuminate to acute. |
Inflorescences | 5–20 × 0.5–2.5 cm; bracts proximally dull brownish to deep greenish purple, distally red, red-orange, or orange, lanceolate or oblong to obovate, deeply 3(–5)-lobed; lobes ascending, linear to lanceolate, long, arising below mid length, central lobe apex rounded to obtuse, others acute. |
(1.5–)3–14 × 2–3 cm; bracts green throughout, sometimes proximally green, distally white on apices, lanceolate to ovate, 3–7-lobed; lobes spreading to ascending, linear to narrowly lanceolate, long, arising below mid length, apex obtuse to acute. |
Corollas | straight or slightly curved, 12–20 mm; tube 13–15 mm; beak exserted or ± equal to calyx, adaxially pale green, 8–11.5 mm; abaxial lip green or red-violet, inconspicuous, slightly pouched, 1.5–2 mm, ca. 10–20% as long as beak; teeth incurved, pink to pale yellow or deep green, 1 mm. |
straight, 10–22 mm; tube 8–15 mm; abaxial lip and beak exserted; beak adaxially yellow to greenish, 3–6 mm, densely puberulent; abaxial lip yellow with purple dots at base, inflated, pouches 3, central pouch slightly 2-lobed, pouches 4–8 mm wide, 3–6 mm deep, side pouches curving up a little at tip, 2–5 mm, 75–95% as long as beak; teeth erect, white or yellow, 0.5–2 mm. |
Calyces | colored as bracts, (10–)13–19 mm; abaxial and adaxial clefts 4–8(–11) mm, 33–50% of calyx length, deeper than laterals, lateral 5–7 mm, ca. 25% of calyx length; lobes linear to lanceolate, apex acute. |
light green, lobes green, 7–13 mm; abaxial and adaxial clefts 3.5–8 mm, 50–67% of calyx length, lateral 2.5–5 mm, ca. 40% of calyx length; lobes narrowly to broadly lanceolate, apex acute to acuminate. |
Stigmas | equal to or slightly exserted from beak. |
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2n | = 22, 24. |
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Castilleja tomentosa |
Castilleja lacera |
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Phenology | Flowering Jun–Oct. | Flowering (Mar–)Apr–Jul(–Aug). |
Habitat | Dry Chihuahuan grasslands. | Grasslands, meadows, moist flats, vernal pool margins, moist forest openings, serpentine slopes and ledges, roadsides. |
Elevation | 1300–1700 m. (4300–5600 ft.) | 0–2700 m. (0–8900 ft.) |
Distribution |
NM; Mexico (Sonora) |
CA; OR
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Discussion | In the United States, Castilleja tomentosa is known from a number of recently discovered populations in and near the southern Animas Valley, Hidalgo County, where it is found in Bouteloua gracilis and Sporobolus airoides grasslands. All known populations are small, and this species should be considered globally endangered. The only recorded Mexican station was the type locality from 1851 near Mabibi in adjacent northern Sonora. A. Eastwood (1909) believed C. tomentosa was a synonym of C. integra, but that species has mostly entire bracts, while the bracts of C. tomentosa are deeply lobed; the two also have different patterns of coloration and pubescence. T. I. Chuang annotated the holotype sheet of C. tomentosa as C. lanata, but C. tomentosa calyces have fairly deep lateral lobes, unlike the emarginate to very shallowly notched lobes of C. lanata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja lacera is found in a wide range of elevations in the central and northern Sierra Nevada region and in the Siskiyou Mountains region of northwestern California and southwestern Oregon. Reports from the Coast Ranges north of the San Francisco Bay region and south of the Siskiyou region in western California are referable to other yellow-flowered annuals, including C. ambigua, C. rubicundula var. lithospermoides, Triphysaria eriantha subsp. eriantha, and T. versicolor subsp. faucibarbata. Although most similar to C. rubicundula, C. lacera is somewhat smaller in stature and flower size. It is also easily confused with yellow-flowered populations of C. tenuis, which has smaller flowers and an included stigma. Two chromosome numbers are known for this species, the more northern populations being diploid, and those to the south having an apparently aneuploid count of 2n = 22, which is unique in the genus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 661. | FNA vol. 17, p. 617. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Orthocarpus lacerus | |
Name authority | A. Gray: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 118. (1859) | (Bentham) T. I. Chuang & Heckard: Syst. Bot. 16: 657. (1991) |
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