The buds form a tight curve with the stem suggesting the shape of a scorpion's tail. Some times refered to as Scallop Phacelia or Notch-leaf Phacelia.
Photo:
Buckskin Mountain State Park, Arizona - - - February 21, 2010
Guide:
Pacific States Wildflowers by Niehaus & Ripper / Sonoran Desert Wildflowers by Spellenberg / A Fiedl Guide to the Plants of Arizona by Epple & Epple / Colorado Desert Wildflowers by Stewart