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Taxon  Report  
Castilleja gleasoni  Elmer
Mt. Gleason paintbrush
Castilleja gleasoni is a perennial herb that is native to California, and endemic (limited) to California.
also called Castilleja gleasonii
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
State of California status: Rare.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~63 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Genus: Castilleja
Family: Orobanchaceae  
(Scrophulariaceae)
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest
Name Status:
Accepted by JEF + CNPS + POWO
Alternate Names:
CNPSCastilleja gleasonii
Information about  Castilleja gleasoni from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (CAPR14)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[saveplants.org] Limited Range, Bloom, Description: This perennial hemiparasite (root parasite) is an endemic to the San Gabriel Mountains, with a limited range in the western part of the mountain range in the Mount Gleason area. Its scarlet inflorescence is showy like many other related paintbrushes, blooming from April to July, however this taxon is distinguished by the presence of branched hairs throughout (Mistretta and Brown 1987). (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/23/2025).