Castilleja integra

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Castilleja integra
Castilleja integra - Michael Tidwell 01.jpg
Coconino National Forest, Arizona, US
Status TNC G4.svg
Apparently Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Orobanchaceae
Genus: Castilleja
Species:
C. integra
Binomial name
Castilleja integra
Synonyms [2]
  • Castilleja angustifolia A.Gray
  • Castilleja elongata Pennell
  • Castilleja gloriosa Britton
  • Castilleja integra var. gloriosa (Britton) Cockerell
  • Castilleja integra var. gracilis Cockerell
  • Castilleja integra var. intermedia Cockerell

Castilleja integra, with the common names orange paintbrush, Southwestern paintbrush, and wholeleaf paintbrush, is a partially parasitic herbaceous perennial plant native to the Southwestern United States and Northern Mexico. The species produces a relatively large amount of nectar and is attractive to hummingbirds. It is better suited to cultivation than most other species in the paintbrush genus ( Castilleja ) and is therefore used in xeriscape gardens and naturalistic meadows, even outside its native range.

Contents

Description

Mature individuals of Castilleja integra are typically 9–50 centimeters (3.5–20 in) in size, though they have been reported to grow as tall as 100 centimeters (39 in). [3] [4] All above ground parts of the plants, the leaves, bracts, stems, and flowers, are covered in light coating of soft down, called tomentum by botanists. [5] [3] The herbaceous stems regrow each season from a hard, woody structure called a caudex that is atop a substantial taproot or stout branched roots. [3] The stems either grow straight up from the ground (erect stems) or have a curved bend at their base to grow outwards a short distance then upwards (ascending stems). C. integra may have just one solitary stem or several, they are always unbranched near the base, but may have short branches near the end of the stems. [3] [4]

Castilleja integra with purple leaves near Carson National Forest, Rio Arriba County, New Mexico Castilleja integra - Patrick Alexander 01.jpg
Castilleja integra with purple leaves near Carson National Forest, Rio Arriba County, New Mexico

Castilleja integra has leaves that may range in color from purplish to fully green, but will usually be pale or dusty looking because of the fine, unbranched hairs on the surface. The leaves are always narrow, but vary from being very narrow and thin like a blade of grass (linear leaves) to being almost rectangular, but still not very wide (narrowly oblong leaves). [3] The leaves are usually whole without divisions or toothed edges (entire), [5] but will occasionally have two shallow divisions near the end of the leaf, giving it three lobes. [3] The edges of the leaves can be wavy, but are never thick or fleshy. Often the edges roll inward towards the center of the leaf (involute). [4] [6] The end of the leaves have a narrow point or slightly rounded tip. The length of the leaves can be 1–9 centimeters (0.39–3.5 in), but usually between 2–7 centimeters (0.79–2.8 in). [3]

Castilleja integra flower, lighter color form, Lost Creek Wilderness, Park County, Colorado Castilleja integra - Rod 01.jpg
Castilleja integra flower, lighter color form, Lost Creek Wilderness, Park County, Colorado

The cluster of flowers and the surrounding bracts (the inflorescence) can be 2 to 15 centimeters long, [3] though usually less than 10 centimeters. [4] The width is 1.5–4 centimeters (0.59–1.6 in). [3] The showy bracts are variable in color with occasional instances of rose, crimson, cerise, pale salmon, or pale yellow individuals, but most often an intense red-orange or orange flame color. [5] [3] Very often they are the same color on the whole of the bract, but sometimes they are green or a pale straw color at the base. The bracts may be shaped like a skinny spear point (lanceolate), oblong like the leaves, egg shaped (obovate), or intermediate between any of these shapes. The ends of the bracts can be undivided or have three or (rarely) five lobes. The middle or lone end of the bract is always blunt while when side lobes are present their ends are narrow (acute). [3] The total length of the bracts is 20 to 40 millimeters. [4]

The sepals (calyx) have the same color and texture as the bracts and may be 18–38 millimeters long, but are more often between 21 and 35 millimeters in length. The sepals are united into a tube for most of their length with splits towards the end. The splits on the top and bottom are 25–35% of the length, as much as 6–18 millimeters long, but more often 9–16 millimeters in length. The splits towards the sides are shorter, 10–15% of the tube's length. The lobes formed by the splits are lanceolate or triangular in shape with a rounded or narrow point. [3]

Castilleja integra has true petals that are fused into a tube for much of their length. The overall length of the petals is usually 25–45 millimeters, but may be as little as 21 mm or as much as 50 mm in exceptional cases. The length of the tube portion of the flower petals is 17–33 millimeters. The beak, the pointed end of the flower petals, is green in color on the upper surface and either only slightly shorter than the sepals to projecting well beyond them. The beak ranges in size from 8–18 millimeters, but is most often in the range of 10–17 millimeters. The lower lip is always dark green and 20% as long as the beak. [3]

Castilleja integra seeds Castilleja integra - Flickr - aspidoscelis.jpg
Castilleja integra seeds

The flowering season is very extended due to the wide range of elevations where the flowers are found, most often in March to October, but occasionally as early as January. [3] In Colorado the blooming season starts in June and continues through August. [7] The seeds are contained within a capsule 12–16 millimeters long. [6]

Similar species that it may be confused with include Castilleja lanata and Castilleja miniata . The combination of undivided leaves that strongly roll inward (involute), the soft unbranched downy hairs, and usually undivided bracts help to distinguish Castilleja integra from its relatives. [3]

Chemistry

Castilleja integra plants contain iridoids bound as glycosides at different concentrations in different parts of the plant. Macfadienoside is found in all parts of the plants, but at especially high levels in the leaves. Similarly, methyl shanziside is much more common in leaves and found at very low levels in bracts or flowers. On the other hand, catalpol is mainly or only found in the flowers. These differences influence what parts of the plants are consumed by herbivores. [8]

Castilleja integra will also transfer certain alkaloids from host plants to its own tissues. For example senecionine, a pyrrolizidine alkaloid, is transferred from Liatris punctata (dotted gayfeathers) and Senecio species to itself. Similarly lupanine, one of the quinolizidine alkaloids, is transferred from Lupinus (lupins). [9] The transfer of senecionine to itself appears to have some benefit in reducing the growth rate of herbivores such as leanira checkerspot caterpillars (Chlosyne leanira). [10] In other cases, like that of Oxytropis sericea , C. integra will parasitize the host plant, but does not transfer the alkaloid swainsonine to itself. [10]

Castilleja integra seed capsules, Sandia Mountain Wilderness, New Mexico Castilleja integra - Elliott Gordon 01.jpg
Castilleja integra seed capsules, Sandia Mountain Wilderness, New Mexico

Taxonomy

Castilleja integra was first scientifically observed in the Organ Mountains of Southern New Mexico near El Paso, Texas, by Charles Wright. [11] Its first published description was in 1858 by Asa Gray. [2] [12] Two different chromosome numbers have been observed in Castilleja integra, 2n = 24 and 48. [3]

Though its naming and classification have never been challenged, a number species or subspecies have previously been described that are now either regarded as illegitimate ( nomen illegitimum ) or as synonyms of Castilleja integra. These include Castilleja angustifolia described by Asa Gray in 1859, the mistaken Castilleja elongata described by Francis W. Pennell in 1941, and Castilleja gloriosa described by James Britten in 1889. Theodore Dru Alison Cockerell recognized that the description of Castilleja gloriosa was incorrect, but thought it may be a subspecies and described it as Castilleja integra var. gloriosa in 1900 along with another subspecies Castilleja integra var. intermedia. He had previously described another subspeices as Castilleja integra var. gracilis in 1890.

As of 2023 Plants of the World Online (POWO), World Flora Online (WFO), and Flora of North America list Castilleja integra as the correct classification and Castilleja gloriosa as a synonym. [2] [13] [3]

Subspecies

The status of the subspecies of Castilleja integra is questionable. In 2023 only Castilleja integra var. gloriosa and the autonym Castilleja integra var. integra are still regarded as a legitimate by some botanists. The USDA Natural Resources Conservation Service PLANTS database (PLANTS) [14] and NatureServe [1] continue to list var. gloriosa as a legitimate subspecies, while POWO, WFO, and the Flora of North America regard it as part of the normal variation of the species. [2] [13] [3]

Names

The species name, "integra", refers to the leaves being undivided or entire in botanical terminology. [5] The species has a variety of common names including "orange paintbrush", [7] "Southwestern paintbrush", [15] "scarlet paintbrush", [16] "grassland paintbrush", [17] "broadbract paintbrush", [18] "wholeleaf painted cup", [19] and "wholeleaf paintbrush". [6]

An older common name is "painter's brush", recorded by Alice Eastwood in 1893. [20] The Zuni people call Castilleja integra "Tsu'yaa'wa tsi'sinakĭa" in their own language, a compound word which means "hummingbird all sucking-food". [21]

Distribution and habitat

Castilleja integra flowering in Coconino National Forest, Arizona Castilleja integra - Michael Tidwell 02.jpg
Castilleja integra flowering in Coconino National Forest, Arizona

The natural range of Castilleja integra can be broadly defined as northern Mexico and the southwestern United States. [22] In the United States its range includes Arizona, Colorado, New Mexico, and Texas, but it not found in California or Nevada. [14] It also grows in much of northern Mexico including the states of Baja California, Sonora, Chihuahua, Coahuila, Nuevo León, Tamaulipas, and Durango. [2] [22] The distribution of elevations is quite wide for this species, most often 1,000 to 3,300 meters (3,300 to 10,800 ft) and they may be occasionally be found all the way down to 600 meters (2,000 ft). [3]

Castilleja integra can be found in a variety of wild habitats including open grasslands, dry meadows, Madrean pine–oak woodlands, open pinyon–juniper woodlands, and subalpine meadows. [23] [24] They are not typically found in cooler or moist habitats like aspen woodlands. [23] [4] They are at least somewhat fire adapted, a study finding no extirpation in low intensity wildfires and only small amount in moderate intensity fires. [25]

Conservation

NatureServe last evaluated Castilleja integra in 1986, listing it as apparently secure (G4) at that time. They similarly found it to be apparently secure (S4) at the state level in Arizona, but they did not evaluate the rest of its range. [1]

Ecology

Castilleja integra blooming shortgrass prairie, Elbert County, Colorado Castilleja integra - Jeff Birek 01.jpg
Castilleja integra blooming shortgrass prairie, Elbert County, Colorado

The variable checkerspot butterfly (Euphydryas chalcedona) feeds upon various species in both the Orobanchaceae and Scrophulariaceae families as a caterpillar, including Castilleja integra. The somewhat similar looking leanira checkerspot (Chlosyne leanira) is more selective. It is only recorded as eating the paintbrush genus, very often Castilleja integra in southern Colorado. [26]

Hummingbirds are a frequent pollinator of Castilleja integra including the rufous hummingbird, broad-tailed hummingbird, and black-chinned hummingbird, due to the good nectar flow, [23] each flower producing about 2 milligrams of sugar in its nectar each day. [27] Pollen is deposited by the plants on the bill and crown of the hummingbirds, who are attracted by the nectar reward concealed in the long tube of the flower. [23] Rufous hummingbirds of both sexes fiercely defend a territory or try to steal a territory of blooming flowers including the orange paintbrush. They try to keep approximately the same number of flowers within the territory and only abandon a territory due to aggression or as the number of flowers decrease. [27]

Castailleja integra is considered to be a hemi-parasite, because a host plant is not required for seedlings to sprout and they can photosynthesize to produce at least some of their own energy. [28] It is partially dependent on a host plant for healthy growth and in potted tests has been found to not survive longer than three months without one. [28] Both the size and the survival of plants is improved when they have a host plant. [29] Known host plants include Artemisia frigida , Artemisia michauxiana , Calylophus serrulatus , Ericameria nauseosa , Liatris punctata , Oxytropis sericea, Penstemon pinifolius , Penstemon attenuatus , Penstemon strictus , Penstemon teucrioides , Calylophus serrulatus , Eriogonum strictum , and Eriogonum jamesii . [28] [30] [31] [10] [32]

When Castailleja integra was tested with Campanula petiolata , Erigeron elatior , Penstemon virens , Tetraneuris scaposa , or Liatris spicata as host plants it had no survival in field plantings after 14 months. When planted with Antennaria media the rate was 3% and with Zinnia grandiflora and Penstemon crandallii it had 17% survival at 14 months. When planted with a host plant in a pot there was 10% or less survival of C. integra after three months when paired with Eriogonum umbellatum var. dichrocephalum, Gaillardia spathulata or Geum triflorum . [28] Likewise, Lupinus argentus does not support Castailleja integra very readily, with only one out of forty pairings blooming in a one year test in 2004. [32]

Uses

Cultivation

Paintbrush flowers are a desirable species in gardens for their showy flowers and attraction of hummingbirds, but can be difficult to grow because of their dependence upon a host species and dislike of being transplanted. This means that plants grown for sale by nurseries must be grown with a compatible host plant in the same pot that will also be desirable to buyers. Orange paintbrush and desert paintbrush are two of the most tolerant species of garden conditions and being transplanted. The best survival rates for orange paintbrush when planted in pots are with fringed sagebrush, lemon sagewort, rubber rabbitbrush, pine-leaved penstemon, yellow sundrops, Blue Mountain buckwheat, or antelope sage. [28] Among penstemon species, Penstemon strictus has some of the best survival rates. Distance from the host plant is also a factor, with the survival rate falling by more than 80% when placed at a distance of 4 centimeters instead of just 2 centimeters. [32] Gardening sources often mention grasses as a host species for paintbrush flowers and Bouteloua gracilis is recommended by gardening books. Plants rarely survive being transplanted once established, and for this reason they are generally not moved in gardens or transplanted from the wild. [33]

Orange paintbrush is best suited to unproductive soils, ones without much organic material, that drain very well. They also have proven adaptable to parasitizing species from outside their native range, such as sheep fescue. [34] Orange paintbrush will grow in areas as cold as USDA zone 4, minimum temperatures of −34.5 to −29 °C (−30 to −20 °F) and as warm as zone 8. [35] [33]

Traditional uses

The Zuni people used the root's bark, mixed with minerals, to dye deerskin black. [21]

Related Research Articles

<i>Castilleja</i> Genus of flowering plants belonging to the broomrape family

Castilleja, commonly known as paintbrush, Indian paintbrush, or prairie-fire, is a genus of about 200 species of annual and perennial mostly herbaceous plants native to the west of the Americas from Alaska south to the Andes, northern Asia, and one species as far west as the Kola Peninsula in northwestern Russia. These plants are classified in the broomrape family Orobanchaceae. They are hemiparasitic on the roots of grasses and forbs. The genus was named after Spanish botanist Domingo Castillejo.

<i>Penstemon barbatus</i> Plant species in the plantain family

Penstemon barbatus, known by the common names golden-beard penstemon, and beardlip penstemon, is a flowering plant native to the western United States.

<i>Castilleja exserta</i> Species of flowering plant

Castilleja exserta is a species of plant in the genus Castilleja which includes the Indian paintbrushes. Its common names include purple owl's clover, escobita, and exserted Indian paintbrush.

<i>Castilleja angustifolia</i> Species of flowering plant

Castilleja angustifolia is a species of wildflower known by the common names northwestern Indian paintbrush and desert Indian paintbrush. It is an herbaceous perennial native to the desert, scrublands, and woodlands of western North America. It grows in hot sandy soils and rock crevices in dry conditions.

<i>Castilleja minor</i> Plant species in the broomrape family

Castilleja minor is a species of flowering plant in the family Orobanchaceae known as thread-torch paintbrush or seep paintbrush. It is native to western North America from British Columbia to California and eastward to the Rocky Mountain states.

<i>Castilleja ambigua</i> Species of flowering plant

Castilleja ambigua is a species of Indian paintbrush known by the common name Johnny-nip. It is native to western part of North America from British Columbia to California, where its commonly found growing along the salt marshes and scrubs of the coast.

<i>Castilleja attenuata</i> Species of flowering plant

Castilleja attenuata is a species of Indian paintbrush, known by the common names valley tassels, attenuate Indian paintbrush, and narrowleaf Owl's-clover. It is native to western North America from British Columbia, through California, to Baja California, where it grows in grasslands and open woodland habitats.

<i>Castilleja foliolosa</i> Species of flowering plant

Castilleja foliolosa is a species of paintbrush, known by the common names felt paintbrush and chaparral paintbrush.

<i>Penstemon eatonii</i> Plant species in the plantain family

Penstemon eatonii is a species of flowering plant in the genus Penstemon, known by the common name firecracker penstemon. It is native to the Western United States from Southern California to the Rocky Mountains. It grows in many types of desert, woodland, forest, and open plateau habitat.

<i>Penstemon fruticiformis</i> Plant species in the veronica family

Penstemon fruticiformis is a species of penstemon known by the common name Death Valley penstemon. It is native to the western United States, where it is found growing in rocky scrub, woodlands, deserts and mountains of eastern California and western Nevada. It is known from scattered occurrences around Death Valley, and only one of the two varieties occurs on the Nevada side of the border.

<i>Penstemon grandiflorus</i> Species of flowering plant in the family Plantaginaceae

Penstemon grandiflorus, known by the common names shell-leaved penstemon, shell-leaf beardtongue, or large-flowered penstemon, is a tall and showy plant in the Penstemon genus from the plains of North America. Due to its large flowers it has found a place in gardens, particularly ones aimed at low water usage like xeriscape gardens.

<i>Castilleja septentrionalis</i> Species of flowering plant

Castilleja septentrionalis is a species of Indian paintbrush known by several common names, including northern paintbrush, sulfur paintbrush, and pale painted cup. There is taxonomic disagreement as to if it is one species widely distributed in mountain and alpine environments of North America or if there is a second species, Castilleja sulphurea, in the Rocky Mountains.

<i>Liatris punctata</i> Species of flowering plant

Liatris punctata is a species of flowering plant in the family Asteraceae known by the common names dotted gayfeather, dotted blazingstar, and narrow-leaved blazingstar. It is native to North America, where it occurs throughout the plains of central Canada, the central United States, and northern Mexico.

<i>Penstemon fruticosus</i> Plant species in the veronica family

Penstemon fruticosus, the bush penstemon or shrubby penstemon, is a species of penstemon native to the Pacific Northwest of North America.

<i>Penstemon virens</i> Species of flowering plant

Penstemon virens, commonly known as blue mist penstemon, Front Range penstemon, or Green beardtongue, is a common Penstemon in the Front Range foothills in Colorado and Wyoming. The dainty flowers are an ornament to many rocky or sandy area within its range. It is confusingly similar to Penstemon humilis and Penstemon albertinus though the ranges of these plants do not overlap in the wild. The origin of calling it the "blue mist penstemon" is not precisely known, but is thought to relate to the large number of blue flowers the plant can produce reminding observers of a blue mist.

<i>Penstemon caespitosus</i> Plant species in the plantain family

Penstemon caespitosus, commonly known as mat penstemon, is a summer blooming perennial flower in the large Penstemon genus. It is a widespread plant from near timberline to the foothills in the Southern Rocky Mountains and Colorado Plateau in North America. It is noted for its ground hugging growth habit and as a plant used in xeriscape and rock gardening.

<i>Castilleja rhexiifolia</i> Species of flowering plant

Castilleja rhexiifolia, commonly called rosy paintbrush, subalpine paintbrush, or rhexia-leaved paintbrush, is a species of plant in Orobanchaceae, commonly known as the broomrape family. They are a common flower found in moist habitats near or above timberline in the Rocky Mountains and the Pacific Northwest. Like most members of the Castilleja genus, they are partially parasitic plants.

<i>Penstemon teucrioides</i> Colorado endemic species of penstemon

Penstemon teucrioides, commonly known as grayleaf creeping penstemon, germander penstemon and germander beardtounge, is a perennial species of plant in the large and colorful Penstemon genus. It is a ground hugging plant that is native to just five counties in the mountains of Colorado. Though it has a very limited range it is widely grown in rock gardens.

<i>Castilleja lineata</i> Species of plant in the paintbrush flower genus

Castilleja lineata, commonly known as marshmeadow paintbrush or linearlobe paintbrush, is an uncommon species that largely grows in the mountains of northern New Mexico, but is also found in small areas of neighboring Colorado and Arizona. It was not scientifically described until 1901 and is little studied.

<i>Castilleja haydenii</i> Rocky Mountain species of paintbrush flower

Castilleja haydenii, also known as Hayden's paintbrush, is a species of flower found in the mountains of southern Colorado and northern New Mexico, generally above timberline in the alpine tundra. Its purple flowers appear in the months of July through September. It was named after the geologist Ferdinand Vandeveer Hayden.

References

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  2. 1 2 3 4 5 "Castilleja integra A.Gray". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 27 October 2023.
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  8. ↑ Haan, Nathan L.; Bowers, M. Deane; Bakker, Jonathan D. (14 January 2021). "Preference, performance, and chemical defense in an endangered butterfly using novel and ancestral host plants". Scientific Reports. 11 (1): 992. Bibcode:2021NatSR..11..992H. doi: 10.1038/s41598-020-80413-y . PMC   7809109 . PMID   33446768.
  9. ↑ Wink, Michael (24 October 2007). "Ecological Roles of Alkaloids". Modern Alkaloids (1 ed.). Wiley. p. 22. ISBN   978-3-527-31521-5.
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  11. ↑ Pennell, Francis W. (1935). "The Scrophulariaceae of Eastern Temperate North America". Monographs. 1. The Academy of Natural Sciences of Philadelphia: 533.
  12. ↑ 'Rep. U.S. Mex. Bound'. 2(1): 119; by Asa Gray.
  13. 1 2 WFO (2023). "Castilleja integra A.Gray". World Flora Online. Archived from the original on 11 November 2023. Retrieved 11 November 2023.
  14. 1 2 NRCS (27 October 2023), "Castilleja integra", PLANTS Database, United States Department of Agriculture (USDA)
  15. ↑ Mohlenbrock, Robert H. (1987). Wildflowers : a Quick Identification Guide to the Wildflowers of North America. New York: Macmillan Publishing Company. p. 120. ISBN   978-0-02-063420-1 . Retrieved 3 November 2023.
  16. ↑ Holloway, Joel Ellis (2005). A Dictionary of Common Wildflowers of Texas & the Southern Great Plains (1st ed.). Fort Worth, Texas: TCU Press. p. 32. ISBN   978-0-87565-309-9 . Retrieved 3 November 2023.
  17. ↑ Martin, Laura C. (1986). The Wildflower Meadow Book : a Gardener's Guide. Charlotte, North Carolina: East Woods Press. p. 180. ISBN   978-0-88742-065-8 . Retrieved 3 November 2023.
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  19. ↑ Patraw, Pauline Mead (1977). Flowers of the Southwest Mesas (6th ed.). Globe, Arizona: Southwest Parks and Monuments Association. p. 51. ISBN   978-0-911408-47-8 . Retrieved 29 November 2023.
  20. ↑ Eastwood, Alice (May 1893). A Popular Flora of Denver, Colorado. San Francisco, California: Zoe Publishing Company. p. 39. Retrieved 3 November 2023.
  21. 1 2 Stevenson, Matilda Coxe (1915). "Ethnobotany of the Zuni Indians". Thirtieth Annual Report of the Bureau of American Ethnology. Bureau of American Ethnology: 80. hdl:10088/91736. Archived from the original on 2023-12-04. Retrieved 2023-11-21.
  22. 1 2 Registry-Migration.Gbif.Org (2022). "Castilleja integra A.Gray in GBIF Secretariat". GBIF Backbone Taxonomy. Global Biodiversity Information Facility. doi:10.15468/39omei. Archived from the original on 7 November 2023. Retrieved 7 November 2023.
  23. 1 2 3 4 Brown, James H.; Kodric-Brown, Astrid (October 1979). "Convergence, Competition, and Mimicry in a Temperate Community of Hummingbird-Pollinated Flowers". Ecology. 60 (5): 1022–1035. Bibcode:1979Ecol...60.1022B. doi:10.2307/1936870. JSTOR   1936870.
  24. ↑ Shreve, Forrest (1915). The Vegication of a Desert Mountain Range as Conditioned by Climatic Factors. Washington, D.C.: Carnegie Institution of Washington. p. 26. Retrieved 24 November 2023.
  25. ↑ Stevens, Jens T.; Miller, Jesse E. D.; Fornwalt, Paula J. (November 2019). "Fire severity and changing composition of forest understory plant communities". Journal of Vegetation Science. 30 (6): 1099–1109. Bibcode:2019JVegS..30.1099S. doi:10.1111/jvs.12796. S2CID   201193276.
  26. ↑ Scott, James A.; Scott, Glenn R. (1978). "Ecology and Distribution of the Butterflies of Southern Central Colorado". Journal of Research on the Lepidoptera. 17 (2). Santa Barbara, California: 87–88, 120. Retrieved 8 November 2023.
  27. 1 2 Kodric-Brown, Astrid; Brown, James H. (March 1978). "Influence of Economics, Interspecific Competition, and Sexual Dimorphism on Territoriality of Migrant Rufous Hummingbirds". Ecology. 59 (2): 285–296. Bibcode:1978Ecol...59..285K. doi:10.2307/1936374. JSTOR   1936374.
  28. 1 2 3 4 5 Love, Stephen L; McCammon, Tony A (2017). "Compatible host/parasite pairs enhance propagation of paintbrush ( Castilleja spp.)". Native Plants Journal. 18 (3): 252–265. doi:10.3368/npj.18.3.252. S2CID   89920217.
  29. ↑ Granados-Hernández, Luisa A.; Pisanty, Irene; Raventós, José; Márquez-Guzmán, Judith; Mandujano, María C. (April 2021). "Better alone? A demographic case study of the hemiparasite Castilleja tenuiflora (Orobanchaceae): A first approximation". Population Ecology. 63 (2): 152–164. Bibcode:2021PopEc..63..152G. doi:10.1002/1438-390X.12076. S2CID   234006080.
  30. ↑ Mead, Elliott W.; Looker, Michael; Gardner, Dale R.; Stermitz, Frank R. (September 1992). "Pyrrolizidine alkaloids of Liatris punctata and its root parasite, Castilleja integra". Phytochemistry. 31 (9): 3255–3257. Bibcode:1992PChem..31.3255M. doi:10.1016/0031-9422(92)83487-J.
  31. ↑ Stermitz, Frank R.; Foderaro, Tommaso A.; Li, Yong-Xian (March 1993). "Iridoid glycoside uptake by Castilleja integra via root parasitism on Penstemon teucrioides". Phytochemistry. 32 (5): 1151–1153. Bibcode:1993PChem..32.1151S. doi:10.1016/S0031-9422(00)95081-7.
  32. 1 2 3 Nelson, David A (2005). "Evaluation of Penstemon as a Host for Castilleja in Garden or Landscape". Native Plants Journal. 6 (3): 254–262. doi:10.2979/NPJ.2005.6.3.254. ISSN   1522-8339. JSTOR   43320529. Archived from the original on 2023-12-03. Retrieved 2023-11-28.
  33. 1 2 Busco, Janice; Morin, Nancy R. (2010). Native Plants for High-elevation Western Gardens (2nd ed.). Golden, Colorado: Fulcrum. pp. 84–85. ISBN   978-1-55591-740-1 . Retrieved 29 November 2023.
  34. ↑ Hitchmough, James (2017). Sowing beauty : Designing Flowering Meadows From Seed. Portland, Oregon: Timber Press. pp. 77, 253, 254. ISBN   978-1-60469-632-5 . Retrieved 22 November 2023.
  35. ↑ "Castilleja integra". Gardens Navigator. Denver Botanic Gardens. Retrieved 24 November 2023.
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