Aristolochia macrophylla  (A. durior) Dutchman’s pipe Aristolochiaceae ARDU(*) Bx, rd;

Aristolochia macrophylla.USDA-NRCS PLANTS Database Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions

Aristolochia macrophylla. USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner’s Sons, New York. (Accessed 4/2014).

Aristolochia macrophylla is a high-climbing, twining vine; bark with distinctive aromatic odor (scratch & sniff); new growth green in winter, older bark gray, striated with numerous elongate lenticels that merge into lines.

Leaves large, heart-shaped, to 40 cm long and wide.

Flowers dark purplish, irregularly tubular, bent at a sharp angle like an old-fashioned smoking-pipe, to 4 cm long, 2.5 cm wide, very broadly 3-lobed at top, lobe tips pointed.

Fruit dry, cylindrical, to 8 cm long, splitting open to release numerous small seeds.

Wetland status: NL.

Frequency in NYC: Very infrequent.

Origin: Native to Appalachian mountains, from southern PA to GA. also horticultural.

Habitat: Rarely escaping into disturbed woodland.