Grindelia stricta subsp. blakei (Steyermark) D.D. Keck

Grindelia stricta subsp. blakei (Steyermark) D.D. Keck is a synonym sensu Bartoli & Tortosa, 2012 of:

Grindelia humilis Hooker & Arnott var. humilis, an accepted variety name sensu Bartoli & Tortosa, 2012.