cornflower aster
stokes' aster
Stokesia laevis
Short's aster
Aster shortii
mountain clematis
purple virgin's bower
Clematis verticillaris
purple clematis
blue-flowered
great lobelia
Campanula rotundifolia
bluebell
harebell
Lobelia siphilitica
explorer's gentian
Gentiana calycosa
blue cardinal flower
Gentianopsis crinita
mist-flower
Eupatorium coelestinum
Gentiana crinita
Conoclinium coelestinum
mistflower
ageratum
Gentianella quinquefolia
Gentiana quinquefolia
five-flowered gentian
Clitoria mariana
ague weed
agueweed
butterfly pea
stiff gentian
Gentiana andrewsii
Salvia lancifolia
closed gentian
blue sage
bottle gentian
Salvia reflexa
blind gentian
common grape hyacinth
Muscari neglectum
Greek valerian
wood violet
Polemonium van-bruntiae
Viola pedata
Polymonium caeruleum van-bruntiae
Jacob's ladder
Geranium pratense
Johnny-jump-up