Perideridia lemmonii

Lemmon's yampah

Family: Apiaceae · Type: perennial · Native

Lemmon's yampah is a California native perennial found in the Sierra Nevada and northern Sierra Nevada eastern regions in open meadows and conifer forest edges at elevations of 760 to 2,500 meters. Flowering from July to August, this plant produces small white flowers in delicate umbels with 10 to 14 rays spreading up to 3.5 centimeters long. Growing 25 to 90 centimeters tall with tuberous roots, it develops erect stems with distinctive ternate basal leaves that are approximately ovate and can be 10 to 30 centimeters long. Its leaves feature 1 to 2 pairs of lance-linear primary leaflets, each 3 to 10 centimeters long and generally entire. The fruit is an oblong to round structure 3 to 4.5 millimeters long with thread-like ribs and a single oil tube between each rib.

Habitat: Open meadows, conifer forest edges

Bloom period: Jul-Aug

Elevation: 760-2500 m

Bioregions: SN, n SNE

California counties: Alpine, Plumas, Tulare, Lassen, Mariposa, Tuolumne, Fresno, Mono, Siskiyou, Nevada, Placer, Butte, El Dorado, Amador, Calaveras, Sierra, Madera, Yuba, Shasta, Del Norte, San Mateo, Modoc, Humboldt, Tehama

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