Aristolochia biflora Aristolochia dammeriana Aristolochia geminiflora Aristolochia maxima var. geminiflora Aristolochia mexicana Aristolochia oblongifolia Aristolochia wageneriana Howardia geminiflora Howardia golmerii Howardia hoffmannii Howardia maxima Aristolochia maxima var. maxima Howardia gollmeri Aristolochia maxima var. angustifolia Aristolochia reticulata
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024