Perideridia pringlei
Adobe yampah
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Family: Apiaceae · Type: Herb · Native
Conservation status: CNPS 4.3
Perideridia pringlei (Adobe yampah) is a native California herb in the Apiaceae family, recognized by cylindric leaflets and multiple oil tubes diagnostic.
Adobe yampah is a California native perennial found in the Tehama, south Coast Ranges, and western Transverse Ranges on grassy slopes and serpentine outcrops at elevations of 300 to 1,800 meters. Flowering from April to June, this plant produces small white flowers in delicate umbels with 5 to 7 rays spreading in an open, ascending pattern. Growing 3.5 to 7.5 decimeters tall with tuberous roots clustered in groups of 2 to 4, it develops distinctive finely divided leaves. Its basal leaves are broadly ovate, twice-pinnate with extremely narrow leaflets less than one millimeter wide and up to 8 centimeters long, creating a feathery, delicate appearance. The fruit is an oblong structure 5 to 8 millimeters long with thread-like ribs and 3 to 4 oil tubes between each rib.
Identification and appearance
Key characters: 6 sympatric species; cylindric leaflets and multiple oil tubes diagnostic
Habitat and range
Habitat: Grassy slopes, serpentine outcrops
Elevation: 300-1800 m
California counties: Kern, Ventura, Monterey, Los Angeles, San Luis Obispo
Bloom period
Perideridia pringlei blooms Apr-Jun.
Conservation status
CNPS 4.3
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 pringlei native to California?
Yes. Perideridia pringlei is native to California (recorded as native).
When does Perideridia pringlei bloom?
Perideridia pringlei blooms Apr-Jun.
Where in California does Perideridia pringlei grow?
Perideridia pringlei occurs in Kern, Ventura, Monterey, Los Angeles, San Luis Obispo, at elevations of 300-1800 m.
What plant family does Perideridia pringlei belong to?
Perideridia pringlei is in the Apiaceae family, genus Perideridia.
Is Perideridia pringlei rare or endangered?
Perideridia pringlei carries California Rare Plant Rank 4.3, state rank S4.
Related species
Other California species in the same genus, family, or bioregion.
- Perideridia sp. — Yampah
- Perideridia bacigalupii — Bacigalupi's yampah
- Perideridia bolanderi — Bolander's yampah
- Perideridia bolanderi subsp. bolanderi
- Perideridia bolanderi subsp. involucrata
- Perideridia californica — California yampah
- Petroselinum crispum — Parsley
- Petroselinum sp.
- Podistera nevadensis — Sierra podistera
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.