Aristolochia barbata Aristolochia barbata subsp. benedicti Aristolochia barbata subsp. dictyantha Aristolochia dictyantha Aristolochia dictyantha var. schomburgkii Aristolochia ecaudata Aristolochia eurystoma Aristolochia eurystoma var. microphylla Aristolochia obtusata Aristolochia rumicifolia Howardia lansbergii Howardia schomburgkii Howardia obtusata Howardia barbata
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024