American wisteria has flowers over a half inch long, that hang in six inch clusters. This probably takes the prize as our most beautiful native vine. And who cares if it's native. When it was discovered here in MIchigan in 1980 everyone was absolutely delighted. It's still an open question if the two sites are natural. Wisteria is certainly native as far north as Virginia to Missouri. North of that, who cares? The vines twine in a counter clockwise direction, while Japanese wisteria goes clockwise. American wisteria is not fragrant. Found in AL, CT, DE, FL, GA, IA, IL, IN(R), KY, LA, MA, MD, MI(T), MO, MS, NC, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, and WV. Cultivated (thanks, Chuck!) in Lenawee Co MI, 5/19/12.