virgin's bower Ranunculaceae Clematis
drummondii Torr. & A. Gray
Leaf: Opposite, deciduous, pinnately compound with 5 to 7 leaflets, individual leaflets with 3 very deep lobes or unlobed, to 3 inches, and toothed; both the long petiolules and the rachis commonly wrap around other structures to aid in climbing.
Flower: Species is dioecious; not showy, greenish white with 4 sepals that subtend showier stamens or pistils, 1 to 1 1/4 inches across, borne on branching panicles, present early summer.
Fruit: An achene with small dry brown seeds with a 3 inch white feathery plume, borne in showy heads, maturing in the fall, more showy than the flowers.
Twig: Initially pale green and somewhat pubescent, becoming brown and glabrous, ridged, wiry, climbs by twining.
Bark: Initially smooth and light brown, later developing long splits and shreddy long strips.
Form: A climbing vine that can completely overtake its supporting stucture in a dense tangle, to 20 feet.