Taxa map Species of the family Apocynaceae North America 10 Asclepias syriaca Common milkweed 3 Asclepias tuberosa Butterfly weed 8 Cynanchum rossicum Pale swallowwort South America 2 Mandevilla illustris 6 Oxypetalum erectum
North America 10 Asclepias syriaca Common milkweed 3 Asclepias tuberosa Butterfly weed 8 Cynanchum rossicum Pale swallowwort South America 2 Mandevilla illustris 6 Oxypetalum erectum