Matricaria
chamomile, matricaria, mayweed
2 species
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Matricaria chamomillawild chamomile, scented mayweed
Distribution: Widespread across the United States and southern Canada.
Habitat: Roadsides, dry waste sites.
Origin: Introduced
Flowers: Late April - June
Matricaria discoideapineapple weed
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas, moist to dry.
Origin: Native
Flowers: May-September