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.
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