Castilleja Indian paintbrush, prairie-fire
The Castilleja genus, comprised of about 200 species, is native to the Americas, northern Asia, and part of Siberia. The genus takes its name from Spanish botanist Domingo Castillejo (1744-1793), a name chosen by his teacher, botanist José Celestino Mutis. They are most commonly known as Indian paintbrush, and also called prairie-fire. Both names are apt and poetic. The flowerheads resemble both brightly daubed paintbrushes and, in groups, dancing flames. Indian paintbrushes are hemiparasitic—they derive some of their nutrients by attaching to the roots of other plants. This dependency on surrounding plants makes paintbrushes difficult to transplant. If you're interested in Castillejas, don't miss Mark Egger's superb photographic compilation on Flickr. Mark is perhaps the world's foremost expert on this genus. This table compares several species of Indian paintbrush. Click the species name for the article on each species. |
Cobwebby Indian paintbrush (Castilleja arachnoidea) · 8/29/2007 · Near Crater Lake, Oregon Woolly Indian paintbrush (Castilleja foliolosa) · 2/26/2010 · Torrey Pines State Park, La Jolla, California |
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Castilleja arachnoidea |
Castilleja foliolosa |
Castilleja integra |
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Common Name | ![]() |
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Plant | 3-12" (7.6-30 cm) high | 12-24" (30-60 cm) tall, multiply branched, coated with a "felt" of white to gray, branched hairs. | Plants are up to 20" (50 cm) in height, covered with fuzzy white hairs. | |||||||||||||||||||||||
Flowers | Yellow to pale green or purplish red in color, appearing in June. Bracts—modified leaves—appear under each flower, and are ¼-¾" (6.3-19 mm) long. They are yellowish to dull red. | Flower clusters are 1-8" (3-20 cm). Each flower is ½-⅞" (1.5-2.5 cm) in size, surrounded with bracts (modified leaves) of similar size. Flowers are orange-red or sometimes yellow-green in color, appearing from March to June. | Flowers are greenish, with a bright scarlet tinge; largely hidden by the bracts, specialized leaves that are red-orange or sometimes yellowish in color. Appear from April to October. | |||||||||||||||||||||||
Leaves | ¾-2" (2-6 cm) long, unlobed or forked into lobes. | ⅜-1¾" (1-5 cm) long, mostly linear (long and narrow), sometimes forked. | linear, long and narrow, hairless on top and hairy beneath, often curled and almost tubular in shape. Leaves are entire, not divided into lobes or forks. | |||||||||||||||||||||||
Fruit | Fruit capsules are about ⅜" (1 cm) long. | ⅜-½" (1-1.5 cm) long, with seeds that are ¹/₃₂-¹/₁₆" (1.5-2 mm). | ||||||||||||||||||||||||
Range/ Zones |
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Habitats | Open summits, dry rocks, elevations 1.1-1.9 mi (1.7-3 km) | Yellow pine forest, foothills woodlands, chaparral, grasslands | Dry hills, woodlands, mesas, plains, high prairies, at elevations of 4800-10197' (1.5-3.1 km) | |||||||||||||||||||||||
Type | Wild | Wild | Wild |
Identification: Plants vary in size between about 6-79" (15-200 cm), most below two feet. They may be annuals, small shrublike perennials, or groups of erect, unbranched stems. Leaves may be entire (undivided), or lobed or forked. Flowers are in groups atop stems. Most of the color comes from bracts and sepals that partly enclose the flowers. Reds, magentas, and yellows are common. They are found in many locations in western North America. Detailed range maps for various Castillejas are available at BONAP's North American Plant Atlas.
Edibility: Flowers of most paintbrushes are edible, with health benefits similar to those of garlic, when consumed in modest quantities. But the plants retain and concentrate the element selenium from the soil in the roots and leaves, making these parts of the plants poisonous. So keep to the flowers alone, in small amounts.
Online References:
Mark Egger’s Castilleja site on Flickr
References:
Turner, Mark, Gustafson, Phyllis, Wildflowers of the Pacific Northwest, Timber Press, 2006
Castilleja description by Thomas H. Kent, last updated 16 Sep 2020.
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Wyoming Indian paintbrush (Castilleja linariifolia) · 5/3/2007 · Death Valley Area · By Rhonda Tatiana Schorer
Longleaf Indian paintbrush (Castilleja subinclusa ssp. franciscana) · Found near the Golden Gate bridge. · 6/12/2007 · Sausalito, California
≈ 11 × 7" (28 × 18 cm)