Delphinium hesperium subsp. pallescens
Pale-flowered western larkspur, Pale-Flowered Western Larkspur
Photo: parent species Delphinium hesperium · no rights reserved · CC0
Family: Ranunculaceae · Type: Herb · Native
Delphinium hesperium subsp. pallescens (Pale-flowered western larkspur) is a native California herb in the Ranunculaceae family, recognized by pale flower colors contrasting with other hesperium subspecies.
Pale-flowered western larkspur is a California native perennial found in the northern Coast Ranges, Cascade Range foothills, Sacramento Valley, San Francisco Bay Area, and southern Coast Ranges in oak woodland habitats at elevations of 20 to 1,000 meters. Flowering from March to May, this plant produces white to light pink or light blue flowers with sepals 10 to 15 millimeters long and a distinctive curved spur 10 to 17 millimeters in length. Growing with stems that are generally hairy at the base and reaching moderate heights, it forms delicate floral clusters with fewer than 25 flowers. Its lower petal blades measure 4 to 7 millimeters, with pedicels spaced more than 8 millimeters apart. The plant's distinctive spreading sepals and soft-colored flowers make it a notable woodland species.
Identification and appearance
Key characters: 25 sympatric species; distinguished by pale flower colors contrasting with other hesperium subspecies
Habitat and range
Habitat: Oak woodland, eastern slope coast ranges
Elevation: 20-1000 m
California counties: Tehama, Tulare, Fresno, Alameda, Santa Clara, San Benito, Napa, Solano, Merced, Contra Costa, Kern, San Luis Obispo, Colusa, Santa Barbara, Mariposa, Butte, Monterey, Glenn, Lake, Yolo, Sonoma, Stanislaus, Sutter, Shasta, Humboldt, San Joaquin, Mendocino, Marin, San Mateo, Ventura
Bloom period
Delphinium hesperium subsp. pallescens blooms Mar-May.
How to tell it apart
vs Lupinus: Delphinium has backward-pointing spurs on flowers; Lupinus has pea-family flowers with banner-wing-keel structure.; vs Geranium: Delphinium has spurred bilateral flowers; Geranium has radially symmetric 5-petaled flowers with no spur.; vs Epilobium: Delphinium has spurred flowers and palmately divided leaves; Epilobium has unspurred 4-petaled flowers and simple or opposite leaves.; vs Aquilegia: Delphinium has a single spur per flower; Aquilegia has 5 spurs radiating from the center.; vs Aconitum: Delphinium has an open spur with visible stamens; Aconitum has a closed hood hiding the stamens.
Frequently asked questions
Is Delphinium hesperium subsp. pallescens native to California?
Yes. Delphinium hesperium subsp. pallescens is native to California (recorded as native).
When does Delphinium hesperium subsp. pallescens bloom?
Delphinium hesperium subsp. pallescens blooms Mar-May.
Where in California does Delphinium hesperium subsp. pallescens grow?
Delphinium hesperium subsp. pallescens occurs in Tehama, Tulare, Fresno, Alameda, Santa Clara, San Benito, Napa, Solano and other counties, at elevations of 20-1000 m.
What plant family does Delphinium hesperium subsp. pallescens belong to?
Delphinium hesperium subsp. pallescens is in the Ranunculaceae family, genus Delphinium.
What habitat does Delphinium hesperium subsp. pallescens grow in?
Delphinium hesperium subsp. pallescens grows in Oak woodland, eastern slope coast ranges.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.