Threadleaf Phacelia, a native species, has been added to the USWildflowers database (02/15/2013.) Scientific name is Phacelia linearis.  It  is also known by the common names Narrow Leaved Phacelia, Carson’s Phacelia, and Threadleaf Scorpionweed.  Photo below was taken in the Boise Foothills of Ada County, ID, on June 7, 2010.   Go to the Threadleaf Phacelia detail page for more photos and information.

Threadleaf Phacelia, Narrow Leaved Phacelia, Carson’s Phacelia, Threadleaf Scorpionweed – Phacelia linearis