Dutchman's pipe Aristolochiaceae Aristolochia macrophylla Lam. symbol: ARMA7 Leaf: Alternate, simple, heart shaped, entire margins, 5 to 10 inches, petioles quite long and often curved, green above. Flower: Very unique, curved pipe shape, nearly U-shaped, brownish purple and green, several inches long, appearing in early summer. Fruit: Six-sided pod, 2 inches long, 3/4 inch wide, brown when ripe in September. Twig: Slender, initially green, but turning brown, leaf scar U-shaped wrapping around small, clustered, wooly buds. Bark: Brown, fairly smooth but develops shallow vertical splits. Form: High climbing, twining vine. Looks like: supplejack Additional Range Information: Aristolochia macrophylla is native to North America. Range may be expanded by planting. See states reporting Dutchman's pipe. More: Fall Color External Links: USDA Plants Database © Copyright 2016, Virginia Tech Dept. of Forest Resources and Environmental Conservation, all rights reserved. Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson