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Arizona or southern mountains paintbrush, Rincon Mountain Indian paintbrush

Mount Hamilton paintbrush, Mt. Hamilton Indian paintbrush

Habit Herbs, perennial, 2.5–8(–10) dm; from a woody caudex; with a taproot or branched root system. Herbs, perennial, 1.8–4(–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 to many, erect to ascending, unbranched, sometimes branched, hairs spreading, long, soft, mixed with shorter stipitate-glandular ones.

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, linear to narrowly or broadly lanceolate, (1–)3–5(–6) cm, not fleshy, margins wavy (obscure on many pressed specimens), involute, usually 0–3(–5)-lobed, apex broadly acute to rounded;

lobes widely spreading, linear to narrowly lanceolate, apex acute to acuminate.

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 × 2–5.5 cm;

bracts proximally greenish, distally red to red-orange, narrowly lanceolate to broadly lanceolate, 3–5-lobed;

lobes spreading, distal, if present, ascending, linear or narrowly oblanceolate to triangular, proximals long, arising below mid blade, distals short, sometimes mere teeth, near apex of central lobe, sometimes wavy-margined, apex obtuse to rounded, sometimes 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 to slightly curved, 24–38 mm;

tube 14–21 mm;

beak exserted from calyx, adaxially green, 11–16.5(–18) mm;

abaxial lip green, reduced, visible or not through deep front cleft in calyx, 2 mm, 13% as long as beak;

teeth incurved, green, 1 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.

whitish with green veins or green, sometimes purple, distally same color as bracts, sometimes with yellowish band below colored apices, 20–26(–29) mm;

abaxial clefts (8–)13–16(–19) mm, adaxial 7–12(–14) mm, clefts 35–50% of calyx length, deeper than laterals, lateral 2–6(–8) mm, 10–30% of calyx length;

lobes linear-lanceolate to lanceolate, apex obtuse to acute.

2n

= 24.

= 48.

Castilleja nelsonii

Castilleja dissitiflora

Phenology Flowering Jun–Oct. Flowering Jun–Aug.
Habitat Rocky slopes, meadows, riparian zones, moist ground in open forests, montane to subalpine. Sagebrush slopes often rocky, montane to subalpine.
Elevation 1900–3100 m. (6200–10200 ft.) 1900–3300 m. (6200–10800 ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Durango, Nayarit, Sonora)
[WildflowerSearch map]
from FNA
NV
[WildflowerSearch map]
[BONAP county map]
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 dissitiflora is endemic to several mountain ranges in central and eastern Nevada, in the upper montane and lower subalpine zones. It has the deep abaxial calyx cleft of C. linariifolia and the stipitate-glandular, wavy-margined leaves of C. applegatei var. pinetorum. Based on morphological data, Holmgren suggested that it is an allopolyploid derived from hybridization of C. applegatei var. pinetorum and C. linariifolia. His proposal is plausible and should be further tested. Castilleja dissitiflora is a tetraploid, while both putative parental species have at least some diploid populations.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 633. FNA vol. 17, p. 603.
Parent taxa Orobanchaceae > Castilleja Orobanchaceae > Castilleja
Sibling taxa
C. affinis, C. ambigua, C. angustifolia, C. applegatei, C. aquariensis, C. arachnoidea, C. attenuata, C. brevilobata, C. brevistyla, C. campestris, C. cervina, C. chambersii, C. chlorotica, C. christii, C. chromosa, C. chrymactis, C. chrysantha, C. cinerea, C. citrina, C. coccinea, C. collegiorum, C. covilleana, C. crista-galli, C. cryptantha, C. cusickii, C. densiflora, C. dissitiflora, C. disticha, C. elata, C. elegans, C. elmeri, C. exserta, C. flava, C. foliolosa, C. fraterna, C. genevieveana, C. glandulifera, C. gleasoni, C. gracillima, C. grisea, C. haydenii, C. hispida, C. hololeuca, C. hyperborea, C. indivisa, C. integra, C. kaibabensis, C. kerryana, C. kraliana, C. lacera, C. lanata, C. lasiorhyncha, C. lassenensis, C. latifolia, C. lemmonii, C. leschkeana, C. levisecta, C. linariifolia, C. lindheimeri, C. lineariloba, C. lineata, C. litoralis, C. lutescens, C. martini, C. mendocinensis, C. mexicana, C. miniata, C. minor, C. mogollonica, C. mollis, C. montigena, C. nana, C. nervata, C. nivea, C. occidentalis, C. oresbia, C. organorum, C. ornata, C. pallescens, C. pallida, C. parviflora, C. parvula, C. patriotica, C. peckiana, C. peirsonii, C. pilosa, C. plagiotoma, C. praeterita, C. pruinosa, C. puberula, C. pulchella, C. purpurascens, C. purpurea, C. raupii, C. revealii, C. rhexiifolia, C. rigida, C. rubicundula, C. rubida, C. rupicola, C. salsuginosa, C. scabrida, C. schizotricha, C. septentrionalis, C. sessiliflora, C. subinclusa, C. suksdorfii, C. tenuiflora, C. tenuis, C. thompsonii, C. tomentosa, C. uliginosa, C. unalaschcensis, C. victoriae, C. viscidula, C. wightii, C. wootonii, C. xanthotricha
C. affinis, C. ambigua, C. angustifolia, C. applegatei, C. aquariensis, C. arachnoidea, C. attenuata, C. brevilobata, C. brevistyla, C. campestris, C. cervina, C. chambersii, C. chlorotica, C. christii, C. chromosa, C. chrymactis, C. chrysantha, C. cinerea, C. citrina, C. coccinea, C. collegiorum, C. covilleana, C. crista-galli, C. cryptantha, C. cusickii, C. densiflora, C. disticha, C. elata, C. elegans, C. elmeri, C. exserta, C. flava, C. foliolosa, C. fraterna, C. genevieveana, C. glandulifera, C. gleasoni, C. gracillima, C. grisea, C. haydenii, C. hispida, C. hololeuca, C. hyperborea, C. indivisa, C. integra, C. kaibabensis, C. kerryana, C. kraliana, C. lacera, C. lanata, C. lasiorhyncha, C. lassenensis, C. latifolia, C. lemmonii, C. leschkeana, C. levisecta, C. linariifolia, C. lindheimeri, C. lineariloba, C. lineata, C. litoralis, C. lutescens, C. martini, C. mendocinensis, C. mexicana, C. miniata, C. minor, C. mogollonica, C. mollis, C. montigena, C. nana, C. nelsonii, C. nervata, C. nivea, C. occidentalis, C. oresbia, C. organorum, C. ornata, C. pallescens, C. pallida, C. parviflora, C. parvula, C. patriotica, C. peckiana, C. peirsonii, C. pilosa, C. plagiotoma, C. praeterita, C. pruinosa, C. puberula, C. pulchella, C. purpurascens, C. purpurea, C. raupii, C. revealii, C. rhexiifolia, C. rigida, C. rubicundula, C. rubida, C. rupicola, C. salsuginosa, C. scabrida, C. schizotricha, C. septentrionalis, C. sessiliflora, C. subinclusa, C. suksdorfii, C. tenuiflora, C. tenuis, C. thompsonii, C. tomentosa, C. uliginosa, C. unalaschcensis, C. victoriae, C. viscidula, C. wightii, C. wootonii, C. xanthotricha
Synonyms C. austromontana
Name authority Eastwood: Proc. Amer. Acad. Arts 44: 579. (1909) N. H. Holmgren: Mem. New York Bot. Gard. 21(4): 46, figs. 6–8. (1971)
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