Lobelia (and other Cardinal Flowers) Lobelia cardinalis Campanulaceae (bellflower family), Subfamily Lobeliaceae (lobelias) With its spires of brilliant crimson tubular flowers waving in the breeze, like the flash of a male cardinal in flight, the cardinal flower is aptly named. Hummingbirds and swallowtail butterflies frequently visit these vivid flowers, the most striking blooms of our [...]