Aristolochia tomentosa Sims

  • Family: Aristolochiaceae
  • Common name: wooly pipevine
  • Synonym: Isotrema tomentosa

    A high-twining woody vine without tendrils. Young stems and lower surface of leaves densely white-pubescent. Leaves of vegetative shoots up to 40 cm (15 in) long and wide, heart-shaped. Flowers about 3 cm long, strongly curved. Calyx with a dark purple orifice and a wrinkled reflexed limb. Fruits capsules about 3 cm (1.2 in) in diameter.

    Distribution: Native to southeastern U. S. as far west as central Oklahoma and southeastern Kansas.
    Habitat: In Oklahoma, the species is usually found in openings in floodplain forests. It is especially abundant around the margins of abandoned fields along the Red River.
    NWI status: FAC
    Comment: Aristolochia is derived from a Greek phrase meaning "assist in childbirth", from its medicinal use; tomentosa refers to the hairy stems and leaves.

    Distribution in Oklahoma:

    Last update: 9/8/99
    Go to Oklahoma Biological Survey Home Page