“Growth of the corolla and androecium show a dorso-ventral asymmetry that also results in zygomorphy.”

“In addition, as suggested by Leins and Erbar, the zygomorphy of the flowers found in the Lobelias makes them more effective for pollination than actinomorphic flowers.”

“We here distinguish clade A from other clades based on the retention of a caulescent habit and moderate floral zygomorphy.”