Distribution: Occurring west of the Cascades crest in southwestern Washington; southern Washington to California.
Habitat: Moist to dry meadows and open slopes or flats, from low to moderate elevations.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Historical in Washington (WANHP)
Pollination: Bees, flies, beetles, wasps
Slender, glabrous perennial from a tuberous-thickened, edible, bundle of roots, the solitary stem 3-6 dm. tall.
Leaves several, well distributed along the stem, the blade once pinnate or ternate; the ultimate segments elongate and narrow.
Inflorescence of terminal and 1-several lateral compound umbels, the umbels 2.5-7 cm. wide; rays up to 6 cm. long at maturity; involucre of a few, narrow bracts; involucel of well-developed, bristly bractlets 0.6-1.0 mm. wide; calyx teeth well developed; flowers white.
Fruit glabrous, oblong-ovate, longer than wide, 2.5-4 mm. long, with prominent ribs.
Publication: Brittonia 2: 243. 1936.
Carum oregana
PNW Herbaria: Specimen records of Perideridia oregana in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Perideridia oregana checklist entry.
OregonFlora: Perideridia oregana information.
E-Flora BC: Perideridia oregana atlas page.
CalPhotos: Perideridia oregana photos.
USDA Plants: Perideridia oregana information.
