bluebottle
Iris tingitana
bachelor's button
blue pea
butterfly pea
Dutch iris
berry blue
bellflower
Hyacinthus orientalis
violet-blue
jack-in-the-pulpit
Indian turnip
wake-robin
Penstemon
genus Penstemon
sapphire
Arisaema triphyllum
rashleighite
Arisaema atrorubens
schizopetalon
genus Chrysosplenium
Chrysosplenium
common grape hyacinth
Schizopetalon walkeri
black sage
Muscari neglectum
genus Smilax
bush violet
Smilax
erioglaucine
harebell
genus Aphyllanthes
browallia
gentian blue
bluebell
Aphyllanthes
genus Phacelia
Boston ivy
Campanula rotundifolia
Parthenocissus tricuspidata
Japanese ivy
abscess root
Merlot