Climbing vine ( Aristolochia durior ), also called pipe vine, of the birthwort family (Aristolochiaceae), native to central and eastern North America.
It bears heart-shaped or kidney-shaped leaves and yellowish-brown or purplish-brown tubular flowers resembling a curved pipe. Exhibiting rapid growth, Dutchman's-pipe is often planted as a screen or an ornamental on porches and arbors.
Dutchman's-pipe ( Aristolochia durior ).
A.J. Huxley