Castilleja tomentosa |
Castilleja montigena |
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hairy Indian paintbrush, tomentose paintbrush |
Heckard's Indian paintbrush, Heckard's paintbrush |
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Habit | Herbs or subshrubs, perennial, 1.3–5 dm; from a woody caudex; with a taproot. | Herbs or subshrubs, perennial, 1.5–4.5 dm; from a woody caudex; with a taproot. |
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. |
few to several, decumbent to erect, sometimes leaning, unbranched or often much-branched distally, with a few short, leafy axillary shoots, hairs spreading, short, soft, stipitate-glandular, mixed with long-spreading, eglandular 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. |
gray-green, sometimes green, lanceolate-linear to narrowly lanceolate, 1–6.5 cm, not fleshy, margins plane, sometimes wavy, flat to involute, 0(–3)-lobed, apex acuminate; lobes spreading-ascending, linear to narrowly lanceolate, apex 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. |
3–30 × 3–4 cm; bracts proximally green to dark purplish, distally red to crimson, sometimes pale salmon, linear-lanceolate to broadly lanceolate, 3–5-lobed; lobes spreading, linear, long, arising below mid length, apex acute, sometimes obtuse. |
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 or slightly curved, 20–40 mm; tube 15–23 mm; abaxial lip exserted to included, beak much exserted; beak adaxially yellow-green to reddish, 9–18 mm; abaxial lip green, reduced, 0.5–1.5 mm, 5–20% as long as beak; teeth incurved, green, (0–)0.5–1.5 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. |
colored as bracts, 15–20 mm; abaxial clefts 3.4–6.2 mm, adaxial 4.5–9 mm, clefts 25–33% of calyx length, deeper than laterals, lateral 0.5–2 mm, 5–10% of calyx length; lobes narrowly triangular, often slightly unequal, apex acute. |
2n | = 48, 72. |
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Castilleja tomentosa |
Castilleja montigena |
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Phenology | Flowering Jun–Oct. | Flowering May–Aug. |
Habitat | Dry Chihuahuan grasslands. | Dry rocky slopes, ledges, open conifer forests, thickets, washes. |
Elevation | 1300–1700 m. (4300–5600 ft.) | 1900–2900 m. (6200–9500 ft.) |
Distribution |
NM; Mexico (Sonora) |
CA
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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 montigena is endemic to the northeastern portion of the San Bernardino Mountains of southern California. In the field, this species is consistently and relatively easily distinguished from nearby populations of C. martini var. martini, which it essentially replaces in the northeastern portion of the San Bernardino Mountains. It is apparently of allopolyploid hybrid origin between C. martini var. martini and C. chromosa, which approaches its range from the adjacent Mojave Desert. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 661. | FNA vol. 17, p. 632. |
Parent taxa | ||
Sibling taxa | ||
Name authority | A. Gray: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 118. (1859) | Heckard: Syst. Bot. 5: 83, fig. 17 [center]. (1980) |
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