Distribution: Widely distributed on both sides of the Cascades crest Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsiides, wastelots, and other disturbed, open areas.
Flowers: May-September
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
Branching, leafy, pineapple-scented, glabrous annual, 5-40 cm. tall.
Leaves 1-5 cm. long, 1-3 times pinnatifid, the ultimate segments short, linear or filiform.
Heads several or numerous, rayless, the disk 5-10 mm. wide; involucre bracts dry, in two series, with broad translucent margins; disk corollas 4-toothed, yellow; receptacle naked, strongly conic and pointed; pappus a short crown.
Achene with 2 marginal and 1 ventral nerves.
Publication: Prodr. 6: 50. 1838.
Chamomilla suaveolens (Pursh) Rydb.
Matricaria matricarioides (Less.) Porter, illegitimate name [HC]
Santolina suaveolens Pursh
PNW Herbaria: Specimen records of Matricaria discoidea in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Matricaria discoidea checklist entry.
OregonFlora: Matricaria discoidea information.
E-Flora BC: Matricaria discoidea atlas page.
CalPhotos: Matricaria discoidea photos.
USDA Plants: Matricaria discoidea information.
