Aristolochia trilobata, also known as "Dutchman's Pipe" has a weird nepethes-like flower with a long filament from the dorsal that hangs down. It sometimes is a bit smelly, but for the collector of weird it is a must have.

Care of Aristolochia trilobata:
Sun to partial shade, temp. 45 to 95 degrees, allow to get slightly dry between watering.

Family: Aristolochiaceae

This plant is shipped in a 3.5 - 4 inch pot.