Helianthus exilis is a species of sunflower reaching over a meter (40 inches) of the genus Helianthus, from the Asteraceae family that is endemic to northern California, from Siskiyou County south to Napa County and Nevada County.
Helianthus exilis is a species of sunflower reaching over a meter (40 inches) of the genus Helianthus, from the Asteraceae family that is endemic to northern California, from Siskiyou County south to Napa County and Nevada County.