Perideridia parishii
Parish's yampah
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Family: Apiaceae · Type: Herb · Native
Perideridia parishii (Parish's yampah) is a native California herb in the Apiaceae family.
Parish's yampah is a California native perennial found in montane and alpine regions at elevations of 1,500 to 2,500 meters. Flowering from June to August, this plant produces small white flowers in delicate umbels with 13 to 27 flowers per cluster. Growing 15 to 90 centimeters tall with green stems and distinctive tuberous roots, it develops a robust underground storage structure. Its basal leaves are complex, with finely divided lanceolate leaflets arranged in one to three pairs, creating an intricate green foliage pattern. The plant produces small fruits approximately 2.5 to 5 millimeters wide with thread-like ribs and distinctive oil tubes.
Habitat and range
California counties: Tulare, Plumas, Mono, San Bernardino, Los Angeles, Inyo, Kern, Fresno, Alpine, Nevada, El Dorado, Placer, Lassen, Sierra, Trinity, Butte, Siskiyou, Tuolumne, Mariposa, Ventura, Calaveras, Santa Barbara, Riverside, Madera
How to tell it apart
vs Ligusticum: Perideridia grows from tubers in grasslands; Ligusticum grows from taproots in mountain forests.; vs Daucus: Perideridia fruits are rounded with thin ribs; Daucus fruits are bristly and form a bird's-nest cluster.; vs Eriogonum: Eriogonum is in the buckwheat family with papery flowers; Perideridia has carrot-family umbels.; vs Angelica: Perideridia has small rounded fruits; Angelica has large flattened fruits with broad wings.; vs Achillea: Achillea is in the sunflower family with flat-topped flower heads; Perideridia has carrot-family umbels.
Frequently asked questions
Is Perideridia parishii native to California?
Yes. Perideridia parishii is native to California (recorded as native).
Where in California does Perideridia parishii grow?
Perideridia parishii occurs in Tulare, Plumas, Mono, San Bernardino, Los Angeles, Inyo, Kern, Fresno and other counties.
What plant family does Perideridia parishii belong to?
Perideridia parishii is in the Apiaceae family, genus Perideridia.
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.