western poison ivy (Toxicodendron rydbergii)

Toxicodendron rydbergii

Description 2

Shape: Small woody plant
Leaf/Branch Arrangement: Alternate
Flower: Yellow/green elongated cluster
Leaves: compound in groups of 3, 6 inches long and 4½ inches wide, egg shaped with pointed tip, few large teeth, sometimes just on one side
Bark: smooth
Fruit/Seed: white/yellow, round, green berry, 1/8 inch diameter
Height: 6-48 inches
Flowering: June - July
Habitat: open woods, fields, roadsides
Other: Noxious weed, produces urushiol oil which can cause a rash when in contact with skin.

Sources and Credits

  1. (c) Robert Flogaus-Faust, some rights reserved (CC BY), http://commons.wikimedia.org/wiki/File:Toxicodendron_rydbergii_RF.jpg
  2. (c) Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)

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