blueblossom

[bloo-blos-uh m]
noun
  1. a shrub, Ceanothus thyrsiflorus, of the buckthorn family, abundant in the western U.S., having finely toothed oblong leaves and lilaclike clusters of blue flowers.

Origin of blueblossom

Also called blue myrtle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018