Life … Plants Vascular Plants Dicots Pepper Plants, Birthworts, and Allies Birthwort Family Pipevines and Birthworts Harlequin Dutchman's Pipe species 179 observations Harlequin Dutchman's Pipe Aristolochia anguicida Key traits Layer Vines Plant type Perennial Vine Wildflower From USDA PLANTS. Close