clematis verticillaris(n = noun.plant) mountain clematis, purple clematis, purple virgin's bower - climber of northeastern North America having waxy purplish-blue flowers;
is a kind of clematis

clematis, clematis baldwinii, clematis crispa, clematis lasiantha, clematis ochreleuca, clematis tangutica, clematis texensis, clematis versicolor, clematis viorna, clematis virginiana, clematis vitalba, curly clematis, genus clematis, golden clematis, marsh clematis, mountain clematis, pipestem clematis, purple clematis, scarlet clematis