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 to California.
Habitat: Grasslands, forest openings, and savanna.
Origin: Native
Flowers: July-September
Growth Duration: perennial
ssp. oregonensis – Oregon white-topped aster
Sericocarpus rigidusColumbian white-topped aster, Columbian whitetop aster, rigid white-topped aster
Distribution: Occurring west of the Cascades crest in lowland Washington; southern Vancouver Island to southwest Oregon.
Habitat: Prairies and open areas at low elevations.
Origin: Native
Flowers: July-August
Growth Duration: perennial