Lomatium peckianum
Peck's lomatium
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Family: Apiaceae · Type: Herb · Native
Conservation status: CNPS 2B.2
Lomatium peckianum (Peck's lomatium) is a native California herb in the Apiaceae family, recognized by glaucous herbage, straw-colored sheaths, and cream-yellow flowers.
Peck's lomatium is a rare California native perennial ranked 2B.2 by CNPS, found in the Klamath Ranges in Siskiyou County within volcanic pine and oak woodlands at elevations of 800 to 1,800 meters. Flowering in May, this plant produces cream to lemon-yellow flowers in delicate umbrella-like clusters with spreading rays. Growing 1 to 4.5 decimeters tall with a slender, scabrous taproot and no visible stem, it has a distinctive glaucous appearance. Its complex leaves are broadly obovate, ternately or ternate-pinnately dissected with narrow linear to oblong segments 1 to 15 millimeters long, attached to straw-colored petioles less than 5 centimeters long. The fruit is an oblong-elliptic structure 8 to 14 millimeters long with several obscure oil tubes along its ribs.
Identification and appearance
Key characters: 21 sympatric species; distinguished by glaucous herbage, straw-colored sheaths, and cream-yellow flowers
Habitat and range
Habitat: Volcanics, pine/oak woodland
Elevation: 800-1800 m
California counties: Siskiyou
Outside California: southern Oregon
Bloom period
Lomatium peckianum blooms May.
Conservation status
CNPS 2B.2
How to tell it apart
vs Tauschia: Lomatium fruits have prominent marginal wings; Tauschia fruits lack wings or have only slight ribs.; vs Sanicula: Lomatium has typical umbrella-shaped flower clusters; Sanicula has dense ball-like flower heads with hooked bristles.; vs Cymopterus: Lomatium grows upright with a stem; Cymopterus is stemless and grows flat to the ground.; vs Conium: Lomatium grows in dry natural habitats; Conium has purple-spotted stems and grows in moist disturbed areas.; vs Daucus: Lomatium fruits are flat with thin wings; Daucus fruits are cylindrical with spiny bristles.
Frequently asked questions
Is Lomatium peckianum native to California?
Yes. Lomatium peckianum is native to California (recorded as native).
When does Lomatium peckianum bloom?
Lomatium peckianum blooms May.
Where in California does Lomatium peckianum grow?
Lomatium peckianum occurs in Siskiyou, at elevations of 800-1800 m.
What plant family does Lomatium peckianum belong to?
Lomatium peckianum is in the Apiaceae family, genus Lomatium.
Is Lomatium peckianum rare or endangered?
Lomatium peckianum carries California Rare Plant Rank 2B.2, state rank S1.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · CalPhotos · CDFW CNDDB
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.