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dioscorea bulbifera
prolific vine with large heart-shaped leaves. and produces tubers resembling potatoes along its stems
spotted in botanical garden (and many other wooded areas)
Dioscorea bulbifera
I'm pretty sure that they know. At least they have been able to get the 'pepper' trees under control.
If you spotted it in a botanical garden...maybe you should tell them...it's a bad exotic pest.