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Jesse Saylor
(Pacific Poison Oak)
The western counterpart to poison ivy, Pacific poison oak also has three-parted leaves and poses a dermatological threat to anyone who touches it. Native to the Pacific Coast states, from Canada to California, it habits open woodland, forest and chaparral environments across the low to middle elevation foothills. Though technically a shrub, it can climb high into tree canopies and sprawl onto other shrubs to become an impressive vine.
This is an undesirable plant due its noxious leaf oils...
Gerald L. Klingaman
(Eastern Poison Ivy)
Poison ivy is the bane of the American hiker, camper, gardener or general outdoors person. The whole plant is poisonous to the touch and induces a nasty skin rash that can be quite severe depending on the sensitivity of the person touching it. This North American native is a common, weedy, deciduous liana (woody vine) that can be found everywhere from moist or dry meadows, woodlands, roadsides or disturbed sites. Its stems produce clinging, aerial roots that help the vine ascend the tallest tree...
Jesse Saylor
(Poison Dogwood, Poison Elderberry, Poison Sumac, Swamp Sumac)
Beautiful to look at but toxic to the touch, poison sumac is notorious for the nasty skin rash that follows contact with any of its parts. This large upright deciduous shrub (or small tree) is native to swamps and other damp habitats in eastern and central North America.
Pinnately compound leaves with 7 to 13 glossy dark-green leaflets and pinkish petioles are alternately borne along the smooth, speckled branches of this hardy shrub. The leaflets have untoothed edges and pointed tips. The foliage...
