1. Hardy deciduous vine having large leaves and flowers with the calyx tube curved like the bowl of a pipe
   - Dutchman's-pipe, pipe vine, Aristolochia durior

Type of: Aristolochia clematitis, birthwort

• Lophodytes cucullatus
• Lopholatilus
• Lopholatilus chamaeleonticeps
• Lophophora
• Lophophora williamsii
• lophophore
• Lophophorus
• Lophosoria
• Lophosoriaceae
• Lopid
• lopper
• Lopressor
• lopseed
• lopsided
• lopsidedly
• lopsidedness
• loquacious
• loquaciously
• loquaciousness
• loquacity
• loquat
• loquat tree
• Lorado Taft
• Loranthaceae
• Loranthus