phlox (n.) Look up phlox at Dictionary.com
1706, from Latin, where it was the name of a flower (Pliny), from Greek phlox "kind of plant with showy flowers" (probably Silene vulgaris), literally "flame," related to phlegein "to burn" (from PIE root *bhel- (1) "to shine, flash, burn"). Applied to the North American flowering plant by German botanist Johann Jakob Dillenius (1684-1747).