popcorn flower

noun
  1. a plant, Plagiobothrys nothofulvus, of the borage family, native to the western U.S., having coiled clusters of small white flowers.

Origin of popcorn flower

An Americanism dating back to 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018