Scottish bluebell (harebell) (Campanula rotundifolia)
Spanish bluebell (Hyacinthoides hispanica)
desert bluebell or California bluebell (Phacelia campanularia)
common bluebell (Hyacinthoides non-scripta)
genus Muscari, the grape hyacinth)
Australian royal bluebell (Wahlenbergia gloriosa)
Italian bluebell (Hyacinthoides italica)
Texas bluebell (Eustoma russellianum)
Virginia bluebell (Mertensia virginica)
Helleborus niger (family Ranunculaceae, black lungwort)
Any of various European plants, of the genus Pulmonaria (family Boraginaceae), that were once used to treat respiratory disorders.
Mertensia virginica (American lungwort, lungwort oysterleaf, smooth lungwort, tree lungwort)
Mertensia maritima (sea lungwort)
Hieracium murorum (in family Asteraceae, French lungwort or golden lungwort)
Verbascum thapsus (in family Scrophulariaceae, bullock's lungwort, cow's lungwort or clown's lungwort)
Lobaria pulmonaria, syn. Stichta pulmonacea, (in family Lobariaceae, lungwort lichen, lung lichen, tree lungwort)