stiff gentian
Gentiana quinquefolia
ague weed
five-flowered gentian
agueweed
Gentianella quinquefolia
Short's aster
Aster shortii
bottle gentian
Gentiana andrewsii
blind gentian
closed gentian
Campanula americana
tall bellflower
Linaria canadensis
blue sage
old-field toadflax
Salvia reflexa
Salvia lancifolia
blue toadflax
Scabiosa arvensis
field scabious
Gentiana calycosa
explorer's gentian
Collinsia verna
blue-eyed Mary
Gentiana crinita
Gentianopsis crinita
Muscari neglectum
common grape hyacinth
germander speedwell
Lobelia siphilitica
Veronica chamaedrys
blue cardinal flower
bird's eye
Ipomoea tricolor
common morning glory
great lobelia
field speedwell
Veronica agrestis
Viola pedata
large yellow lady's slipper
Cypripedium calceolus pubescens
old-maid's bonnet
Indian beet
Lupinus perennis
sundial lupine
wild lupine
wood violet
Johnny-jump-up
bird's-foot violet
pansy violet
Malva sylvestris
Echium vulgare
blue devil
blueweed
Liatris pycnostachya
robin's plantain
tall mallow
cheese
cheeseflower
high mallow
Erigeron pulchellus
dense blazing star
viper's bugloss
blue thistle
European brooklime
brooklime
Veronica beccabunga
Campanula rotundifolia
bluebell
harebell
Myosotis sylvatica
blue-flowered
purple silkweed
Camassia quamash
garden forget-me-not
Asclepias purpurascens
common camas
Baptisia australis
blue false indigo
blue fleabane
Erigeron acer
Gentianopsid procera
Polemonium caeruleum
Jacob's ladder
Polymonium caeruleum van-bruntiae
Campanula medium
Canterbury bell
Sanicula bipinnatifida
Gentiana procera
Polemonium van-bruntiae
charity
cup and saucer
purple sanicle
Greek valerian
yellow honeysuckle
Eupatorium coelestinum
Lonicera dioica
Conoclinium coelestinum