Phlox glaberrima
Family: Polemoniaceae
smooth phlox
Phlox glaberrima image
Robert H. Read  
Etymology: Phlox: from the Greek phlox, "flame," ancient name of Lychnis of the Caryophyllaceae
Plants: erect, perennial, 2'-4' tall forb, usually hairless; stems slender
Leaves: many, mostly opposite, not divided, not veiny, linear to lance-like gradually tapering to a sharp point
Flowers: red-purple, 5-parted, 1/2"-3/4" wide, funnel-shaped, lobes not notched, tube narrow; inflorescence usually several branched clusters (cymes) terminal and from the upper 1-4 pairs of leaf axils; blooms June-Aug.
Habitat: wet; woods, prairies
Conservation Status: Endangered