Perideridia leptocarpa

Narrow-seeded yampah

Family: Apiaceae · Type: perennial · Native

Conservation status: CNPS 4.3

Narrow-seeded yampah is a California native perennial found in the Klamath Ranges in serpentine woodland outcrops at elevations of 600 to 1,500 meters. Flowering from June to August, this plant produces white flowers in delicate umbels with 12 to 18 unequal rays. Growing 45 to 75 centimeters tall with tuberous roots clustered in groups of two or three, it has a distinctive multi-layered leaf structure. Its basal leaves are lance-ovate and 2-pinnate, featuring narrow linear leaflets one to five centimeters long that are entire and sharply pointed. The fruit is a linear to club-shaped structure five to seven millimeters long with thread-like ribs.

Habitat: Serpentine outcrops in woodland

Bloom period: Jun-Aug

Elevation: 600-1500 m

Bioregions: KR.

California counties: Siskiyou, Trinity

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.