Castilleja

Genus of flowering plants belonging to the broomrape family
title: "Castilleja" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["castilleja", "parasitic-plants", "orobanchaceae-genera"] description: "Genus of flowering plants belonging to the broomrape family" topic_path: "general/castilleja" source: "https://en.wikipedia.org/wiki/Castilleja" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Genus of flowering plants belonging to the broomrape family ::
| image = Castilleja integra - Michael Tidwell 01.jpg | image_caption = Castilleja integra flowering stem in Coconino National Forest, Arizona | taxon = Castilleja | authority = Mutis ex L.f. | subdivision_ranks = Species | subdivision = See List of Castilleja species | synonyms_ref = | synonyms = {{Species list | Clevelandia | Greene | Euchroma | Nutt. | Gentrya | Breedlove & Heckard | Oncorhynchus | Lehm. | Ophiocephalus | Wiggins
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 (following major rearrangements of the order Lamiales starting around 2001; sources which do not follow these reclassifications may place them in the Scrophulariaceae). They are hemiparasitic on the roots of grasses and forbs. The genus was named after Spanish botanist Domingo Castillejo.
Taxonomy
Castilleja was scientifically described by Carl Linnaeus the Younger using a partial description by José Celestino Bruno Mutis in 1782. The type species was Castilleja fissifolia from Columbia. The genus as a whole has never been renamed, however five others were described and named that are considered to be synonyms of Castilleja. For example, in 1818 Thomas Nuttall described a genus that he named Euchroma meaning finely colored, moving the species now known as Castilleja coccinea out of Bartsia where it had been placed by Carl Linnaeus and also named another species as Euchroma grandiflora. However, Nutttall's Euchroma grandiflora had already been named and correctly placed as Castilleja sessiliflora by Frederick Traugott Pursh in 1813.
Species
Main article: List of Castilleja species
There are 216 species that are considered valid by Plants of the World Online. More than half, 119 species, are native to North America north of Mexico.
Names
The name Castilleja was chosen by Mutis as an honor for the Spanish naturalist Domingo Castillejo. Castillejo was a professor of medical materials and botany at the Cadiz Royal College of Surgery between 1770 and 1786. Mutis wrote in Latin, "Ab Stemodia quantum ex characteríbus video, valde diversa haec singularissimeplanta, proculdubio numeranda ínter Didynamas. Castillejam dixi in merítissimum honorem D. Castillejo Botanici Gadensis."
Description
The species in Castilleja are quite varied in form and lifecycle. The genus includes many species that are completely herbaceous, lacking woody material in their above-ground parts. Though it also includes some slightly woody subshrubs and even a few woody shrubs. They may grow as annual plants, but most of the species are perennial. Their roots are equally diverse in structure ranging from taproots to fibrous root systems. Some species also have modified underground stems called rhizomes to spread short distances.
Stem lengths range from a minute 1 centimeter to as much as 2 meters. In almost all species the leaves are attached to the stems and alternating. The inflorescences are always at the ends of the stems, which may or may not branch. The inflorescence usually have bracts that are brightly colored for the whole length or towards their ends.
Ecology
::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/c7/Yellow_Indian_Paintbrush_in_Mima_Mounds_Natural_Area_Preserve_01.jpg" caption="Castilleja flava in the [[Mima Mounds Natural Area Preserve"] ::
Castilleja species are eaten by the larvae of some lepidopteran species, including Schinia cupes (which has been recorded on C. exserta) and Schinia pulchripennis (which feeds exclusively on C. exserta), and checkerspot butterflies, such as Euphydryas species. Pollinators aid these plants in reproduction, with insects visiting the flowers, as well as hummingbirds for some species.
Castilleja species can play an important role in plant community dynamics and multitrophic interactions. For example, Castilleja hemiparasitic reliance on other plant species may affect competition and dominance among other plant species in its community. Additionally, the foliage of some Castilleja species naturally contains defensive compounds that are sequestered in the tissues of larvae of specialist insect species that have developed a tolerance for these compounds and are able to consume the foliage. These sequestered compounds then confer chemical protection against predators to larvae.
Hybridization
::figure[src="https://upload.wikimedia.org/wikipedia/commons/1/14/Seeds_of_putative_Castilleja_levisecta_×_C._hispida_individual.jpg" caption="Seeds of putative ''[[Castilleja levisecta]]'' × ''[[Castilleja hispida]]'' hybrid"] ::
Some species in the Castilleja genus are able to hybridize, especially when ploidy levels match, and hybrids may produce viable seed. This hybridization potential has been identified as a threat to the genetic integrity of certain endangered Castilleja species.
Uses
The author Gregory L. Tilford claims that the flowers of Indian paintbrush are edible. However, these plants have a tendency to absorb and concentrate selenium in their tissues from the soils in which they grow, and can be potentially very toxic if the roots or green parts of the plant are consumed. Highly alkaline soils increase the selenium levels in the plants. In addition Castilleja species will take up alkaloids from other plants when parasitizing them.
Symbolism
Castilleja linariifolia is the state flower of Wyoming.
References
References
- (1951). "An Illustrated Flora of the Pacific States: Washington, Oregon, and California". Stanford University Press.
- (1818). "The Genera of North American Plants, and a Catalogue of the Species, to the year 1817". Printed for the author by D. Heartt.
- "''Castilleja sessiliflora'' Pursh".
- "''Castilleja Mutis'' ex L.f.".
- Quattrocchi, Umberto. (2000). "CRC World Dictionary of Plant Names". CRC Press.
- (1999). "Ciencia y Representación: Dispositivos en la construcción, la circulación y la validación del conocimiento científico". Universidad Nacional de Colombia, Programa Universitario de Investigación en Ciencia, Tecnología y Cultura.
- (5 February 2024). "''Castilleja'' - FNA".
- (2013). "Flora of the Four Corners Region: Vascular Plants of the San Juan River Drainage, Arizona, Colorado, New Mexico, and Utah". Missouri Botanical Garden.
- "Indian Paintbrush (Castilleja coccinea)". United States Department of Agriculture.
- Schmidt, Natalie. (2016). "Parasitic plants and community composition: how Castilleja levisecta affects, and is affected by, its community". University of Washington.
- (14 January 2021). "Preference, performance, and chemical defense in an endangered butterfly using novel and ancestral host plants". Scientific Reports.
- (May 2018). "Hemiparasites can transmit indirect effects from their host plants to herbivores". Ecology.
- (2014). "Arbuscular mycorrhizal fungi and aphids interact by changing host plant quality and volatile emission". Functional Ecology.
- (2021). "Strategy and Guidance for Minimizing Hybridization Risk of Castilleja levisecta (CALE) with Castilleja hispida (CAHI) While Advancing Conservation of CALE and Taylor's Checkerspot Butterfly (Euphydryas editha taylori; TCB)". U.S. Fish and Wildlife Service, Washington Department of Fish and Wildlife, and Washington Department of Natural Resources.
- (2015). "An Assessment of Seed Production and Viability of Putative Castilleja levisecta × C. hispida Hybrids". Center for Natural Lands Management and University of Washington.
- Tilford, Gregory L.. (1997). "Edible and Medicinal Plants of the West". Mountain Press Publishing.
- (January 2002). "The Use of Arabidopsis to Study Interactions between Parasitic Angiosperms and Their Plant Hosts". The Arabidopsis Book.
- link. (2008-05-11)
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