white-topped aster
2 species
1 subspecies and varieties
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Sericocarpus oregonensisOregon white topped aster
Distribution: Occurring in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Grasslands, forest openings, and savanna.
Origin: Native
Flowers: July-September
ssp. oregonensis – Oregon white topped aster
Sericocarpus rigidusColumbian white-topped aster, Columbian whitetop aster, rigid white topped aster
Distribution: West of the Cascades from southern Vancouver Island, BC, to southwest Oregon, but chiefly in Washington.
Habitat: Prairies and open areas at low elevations.
Origin: Native
Flowers: July - August