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Taxon  Report  
Erythronium tuolumnense  Applegate
Tuolumne fawn lily,   Tuolumne fawnlily
Erythronium tuolumnense is a perennial herb (bulb) that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
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
~90 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Erythronium
Family: Liliaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Ultramafic affinity: 2.5 - strong indicator

Communities: Yellow Pine Forest, Foothill Woodland, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS

Information about  Erythronium tuolumnense from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (ERTU)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Range, Rarity, Habitation, Cultivation, Conservation: Erythronium tuolumnense is a species of flowering plant in the family Liliaceae, known by the common name Tuolumne fawn lily or Tuolumne dog's tooth violet. However, it is neither a true lily nor a violet. It is endemic to the Sierra Nevada of Tuolumne County, California; from 600 m (1,969 ft) along Italian Bar Road up to 1,000 m (3,281 ft) altitude at the headwaters of Deer Creek.[2] This rare plant is threatened by human activity such as logging in its small native range. Inhabiting moist, light deciduous woodland, this plant is also found in cultivation. The species[5] and the hybrid cultivar 'Pagoda'[6] have gained the Royal Horticultural Society's Award of Garden Merit. Conservation Known from only a small number of populations, the largest of which have over ten thousand individuals. Erythronium tuolumnense is listed as imperiled by NaturServe. It has a small historic range, and human activity, especially recreational off-road vehicle use threatens the largest population. Other threats include mining, garbage dumping, camping, logging and fire suppression.[7] (contributed 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/25/2024).