Yellow flowers of Castilleja (Indian paintbrush or prairie-fire) bloom at North Kananaskis Pass in Peter Lougheed Provincial Park, Kananaskis Country, Alberta, Canada. Beatty Glacier is in the background. Castilleja is a genus of about 200 species of annual and perennial herbaceous plants native to the west of the Americas plus northeast Asia. These plants are classified in the family Orobanchaceae and are hemiparasitic on the roots of grasses and forbs.
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