shall flower

/ˈʃæl ˌflaʊər/
noun
  1. A plant of the genus Clarkia, especially Clarkia pulchella, with showy pink or purple flowers; also called farewell-to-spring.
    • The shall-flower blooms in late spring and adds a splash of color to the meadow.
    • Wild shall-flowers are common in the Pacific Northwest during early summer.
    • She planted shall-flowers along the garden path for a cheerful display.
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