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Taxon  Report  
Lilium washingtonianum  Kellogg  ssp. purpurascens  (Stearn) M. W. Skinner
Cascade lily,   Purple flowered washington lily
Lilium washingtonianum ssp. purpurascens is a perennial herb (bulb) that is native to California, and also found in Oregon.
California Rare Plant Rank: 4.3 (limited distribution).
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
~106 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Parent: Lilium washingtonianum
Genus: Lilium
Family: Liliaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Ultramafic affinity: 3.5 - broad endemic / strong indicator

Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
JEFLilium purpureum
JEF + PLANTSLilium washingtonianum var. purpurascens
JEFLilium washingtonianum var. purpureum
Information about  Lilium washingtonianum ssp. purpurascens from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


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[oregonflora.org] Description, Habitat, Pollinators: Plants to 2.6 m, often glaucous; bulbs ascending to erect most scales indistinctly 2(3) - segmented, longest 3.3 -12 cm. Leaves in 1 - 9(14) whorls, horizontal to nearly clasping stem, generally oblanceolate, 3 -13 cm; margin wavy or not. Inflorescences flowers 1 -15(33), nodding to ascending. Flowers slightly bilateral, roughly trumpet-shaped, strongly fragrant; perianth segments (5.6)6.2 - 9.5(10.5)cm, white, becoming deep pink or lavender, magenta spots minute, inner segments wider and strongly oblanceolate, distal 33% portion recurved, outer surface generally purplish (often faintly so); stamens slightly longer in length than perianth, filaments roughly parallel, anthers 8 -15 mm, cream, becoming yellow, pollen pale (bright) yellow; pistil 7.5 - 10.4 cm. Fruits 2.7 - 5.8 cm, generally ribbed. 2n=24. Douglas-fir forests, roadsides, burned clearcuts. Flowering Jun - Aug. 50 - 2000m. Casc, ECas, Sisk, WV. CA. Native. The Cascade lily is pollinated by sphinx and doubtless other moths in the family Sphingidae. Nectar secretion and scent production are timed to their arrival at dusk. The open nature of the flower and copious nectar secretion attract many diurnal visitors including a variety of butterflies, bees, and flies, but these insects are not significant pollinators. (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: 05/19/2024).