poison-ivy Anacardiaceae Toxicodendron radicans
Leaf:Alternate, trifoliate, 7 to 10 inches long, leaflets are ovate and irregularly toothed, shiny green above, paler below. TOXIC.
Flower:Species is dioecious; small, yellowish green, appearing in clusters, present late spring to early summer. TOXIC.
Fruit:Greenish white, round, 1/4 inch in diameter, borne in a hanging cluster, ripe in late summer and persist through winter. TOXIC.
Twig:Slender, gray- to red-brown, sparingly pubescent or glabrous, slender aerial roots present and older growth becomes densely covered and "hairy" in appearance; buds are stalked, naked, fuzzy brown, 1/4 inch long. TOXIC.
Bark:Dark gray, densely covered in aerial roots. TOXIC.
Form:May be present as a low (6 to 18 inches), spreading "carpet" on the forest floor, as a climbing vine, or as a bush.