I'm having trouble fitting it to a typical Phlox pilosa. The leaves match more closely Phlox glaberrima, and the flower tubes are long but that species is 'smooth'.
http://www.southeasternflora.c...
Phlox pilosa usually have hairy flower tubes, and the calyx is longer than the tube. The petals look a little blunt too.
http://www.southeasternflora.c...
I begun to wonder if the two species crossed, so I search for crosses. I found confusion.
https://books.google.co.uk/boo...
https://polemoniaceae.wordpres...
Yes!
Extensive polymorphism for the cross compatibility
of Phlox pilosa with P. glaberrima occurs
within Illinois populations.
http://www.pnas.org/content/70...
