These seeds are from Aristolochia pothieri. This climbing vine has heart shaped leaves and yellow and purple blossoms. All Aristolochia species, except for the Aristolochia gigantea, are larval host plants for the Pipevine Swallowtail, Polydamas Swallowtail, and Mylotes Cattleheart butterflies. USDA Hardiness Zones 5 to 9.