Castilleja nelsonii |
Castilleja genevieveana |
|
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Arizona or southern mountains paintbrush, Rincon Mountain Indian paintbrush |
Genevieve's paintbrush |
|
Habit | Herbs, perennial, 2.5–8(–10) dm; from a woody caudex; with a taproot or branched root system. | Herbs, perennial, 1.5–4.5 dm; from a woody caudex; with a taproot. |
Stems | few to many, ascending to erect, unbranched or often strongly and diffusely branched distally, hairs sparse to dense, spreading to matted, long proximally on stem, becoming puberulent distally, ± stiff, eglandular, often mixed with retrorse shorter ones. |
several, erect or ascending, unbranched or often branched proximally, loosely lanate, hairs spreading to retrorse, flattened, often matted, long, soft, eglandular. |
Leaves | green, linear-lanceolate or narrowly to broadly lanceolate, 2–6.5(–8) cm, not fleshy, margins plane, flat to involute, 0(–3)-lobed, apex acute; lobes ascending, lanceolate, apex acute to obtuse. |
green to gray-green, linear-lanceolate to narrowly oblong, 1.5–7.5 cm, not fleshy, margins plane, involute, 0(–3)-lobed, apex rounded; lobes spreading, linear or filiform, originating from distal 1/3 of blade, apex acute. |
Inflorescences | (2.5–)5–15 × 2–4.5 cm; bracts proximally greenish, distally scarlet to red or orange-red, rarely yellow or crimson, veins usually yellow or yellow-green, contrasting conspicuously with base color, lanceolate or elliptic to oblanceolate or obovate, 0–3(–5)-lobed; lobes ascending, lanceolate to triangular, medium length, arising above mid length, apex rounded to obtuse. |
2.5–10(–20 in fruit) × 1.5–2.5 cm; bracts proximally pale greenish to green, distally yellow, yellow-orange, or orange, ovate to broadly lanceolate or broadly oblanceolate-obovate, 0–3-lobed; lobes ascending to erect, narrowly lanceolate, medium length, arising near or above mid length, apex rounded to acute. |
Corollas | slightly curved, 15–35 mm, subequal to calyx or beak partially to strongly exserted; tube 15–17 mm; beak adaxially yellowish green, 10–16 mm; abaxial lip green, reduced, ± pouched, 0.5–1.5 mm, 4–10% as long as beak; teeth incurved, deep green, 0.7–1 mm. |
straight or slightly curved, 24–37 mm; tube 15–22 mm; slightly shorter than calyx or usually with beak, sometimes abaxial lip, exserted beyond calyx apices; beak adaxially green to yellowish, 7–15 mm; abaxial lip green or yellowish, reduced, ± inconspicuous, slightly pouched, 1.6–6 mm, less than 50% as long as beak; teeth spreading, yellow or yellow-green, 1–4 mm. |
Calyces | mostly yellowish throughout, with a thin reddish apex, 15–27 mm; abaxial clefts (5–)9–11 mm, adaxial 4.5–9.5 mm, clefts 25–50% of calyx length, deeper than laterals, lateral 2–4 mm, 10–20% of calyx length; lobes linear-lanceolate to triangular, apex acute to acuminate, rarely ± obtuse. |
colored as bracts, 23–27 mm; abaxial and adaxial clefts 10–15 mm, 33–50% of calyx length, deeper than laterals, lateral 4–9 mm, 15–33% of calyx length; lobes oblong to lanceolate or narrowly triangular, apex acute to rounded. |
2n | = 24. |
|
Castilleja nelsonii |
Castilleja genevieveana |
|
Phenology | Flowering Jun–Oct. | Flowering Mar–Jun. |
Habitat | Rocky slopes, meadows, riparian zones, moist ground in open forests, montane to subalpine. | Rocky slopes, open stands of juniper, over limestone. |
Elevation | 1900–3100 m. (6200–10200 ft.) | 500–900 m. (1600–3000 ft.) |
Distribution |
AZ; NM; Mexico (Chihuahua, Durango, Nayarit, Sonora)
|
TX; Mexico (Coahuila) |
Discussion | Castilleja nelsonii is fairly common in the upper elevations of the so-called sky island ranges from central and eastern Arizona to adjacent New Mexico, southward into the Sierra Madre Occidental, at least as far south as southern Chihuahua, where the type collection was obtained on Cerro Mohinora. Although it was long known in the United States as C. austromontana, the name C. nelsonii has priority. Some specimens from southern Coconino County, Arizona, approach C. miniata, but most material is easily separable. Castilleja nelsonii occasionally hybridizes with C. mogollonica in Apache County, Arizona, near the border of the range of the former. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja genevieveana is known from eight counties in southwestern Texas and from a small area of adjacent Coahuila, Mexico. The species is likely related to the widespread C. integra and geographically replaces it. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 633. | FNA vol. 17, p. 609. |
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja |
Sibling taxa | ||
Synonyms | C. austromontana | |
Name authority | Eastwood: Proc. Amer. Acad. Arts 44: 579. (1909) | G. L. Nesom: Phytologia 72: 210. (1992) — (as genevievana) |
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