Perideridia bolanderi subsp. bolanderi
Photo: parent species Perideridia bolanderi · (c) Matt Lavin, some rights reserved (CC BY) · licence
Family: Apiaceae · Type: Herb · Native
Perideridia bolanderi subsp. bolanderi is a native California herb in the Apiaceae family, recognized by deciduous bracts and habitat.
Bolander's yampah is a California native perennial found in the Klamath Ranges, high Cascade Range, Sierra Nevada Mountains, Modoc Plateau, and northern eastern Sierra Nevada in meadows, scrub, and pine forest at elevations of 850 to 2,750 meters. Flowering from June to August, this plant produces small white flowers in dense umbels with 25 to 30 individual blossoms. Growing 15 to 80 centimeters tall with green, upright stems, it develops delicate, thread-like leaf segments ranging from 1 to 4 millimeters wide. Its leaves feature distinctive terminal segments 3 to 8 centimeters long and shorter lateral segments 0.5 to 3 centimeters in length, with lanceolate bracts that have uneven, scarious margins. The plant's intricate leaf structure and compact flower clusters make it a subtle but characteristic member of California's native plant communities.
Identification and appearance
Key characters: 10 sympatric species; distinguished by deciduous bracts and habitat
Habitat and range
Habitat: Meadows, scrub, pine forest
Elevation: 850-2750 m
California counties: Plumas, Lassen, Trinity, Mariposa, Fresno, Shasta, Alpine, Placer, Nevada, El Dorado, Modoc, Sierra, Mono, Butte, Tehama, Kern, Tulare, Siskiyou, Tuolumne
Outside California: to Oregon, Idaho, Wyoming, Nevada
Bloom period
Perideridia bolanderi subsp. bolanderi blooms Jun-Aug.
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 bolanderi subsp. bolanderi native to California?
Yes. Perideridia bolanderi subsp. bolanderi is native to California (recorded as native).
When does Perideridia bolanderi subsp. bolanderi bloom?
Perideridia bolanderi subsp. bolanderi blooms Jun-Aug.
Where in California does Perideridia bolanderi subsp. bolanderi grow?
Perideridia bolanderi subsp. bolanderi occurs in Plumas, Lassen, Trinity, Mariposa, Fresno, Shasta, Alpine, Placer and other counties, at elevations of 850-2750 m.
What plant family does Perideridia bolanderi subsp. bolanderi belong to?
Perideridia bolanderi subsp. bolanderi is in the Apiaceae family, genus Perideridia.
What habitat does Perideridia bolanderi subsp. bolanderi grow in?
Perideridia bolanderi subsp. bolanderi grows in Meadows, scrub, pine forest.
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.