Phacelia

This is a large genus of over 150 species in North America, most of which are western, although a few are centered in the southeastern United States.

1. Stamens long-exserted (2–6 mm) beyond corolla, glabrous.

P. tanacetifolia

1. Stamens scarcely if at all longer than the corolla, the filaments hairy.

2. Corolla bell-shaped, with distinct tube, the lobes entire; range northern (Isle Royale).

P. franklinii

2. Corolla nearly rotate (flat), the lobes fringed; range southern.

P. purshii

All species found in Phacelia

Phacelia frankliniiFRANKLIN'S PHACELIA 
Phacelia purshiiMIAMI-MIST 
Phacelia tanacetifoliaFIDDLENECK, SCORPION-WEED, LACY PHACELIA 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 29, 2017. http://michiganflora.net/genus.aspx?id=Phacelia.