Aristolochia watsonii (Watson's Dutchman's pipe, southwestern pipevine, Indian root, snakeroot) is a perennial plant[2] in the birthwort family (Aristolochiaceae), found growing among plants of the Arizona Uplands in the Sonoran Desert.

[2] In full sun and drought conditions, leaves turn from green to purple-brown.

[2] Fruits are capsules having five vertical ribs with triangular-shaped flat and black seeds in each of five compartments.

[2] Flowers shaped and smelling like a rodent's ear attract small blood-sucking flies, which are deceived by the appearance and odor and get trapped in the convoluted flower form for a day, then escape to pollinate another plant.

[3]: 138 Native Americans believed it could be used to treat snakebites, hence its common names Indian root[citation needed] or snakeroot.