My Colby-Sawyer Experience

“The first section of Betwixt and Between: The Honors Pathway was a crucial step in my assimilation process of becoming a college student.”
Megan Ruggiero, English major

175th Celebration

In 2012 the college celebrated 175 years as an institution of teaching and learning. Visit the 175th website for more information and to view photos of the events.

Poison Ivy Toxicodendron radicans
Cashew or sumac Anacardiaceae family

Leaves: 3-parted and long-stalked, but otherwise variable. May be stiff and leatherly or merely thin. Occasionally reddish in color. Leaves are very variable. End leaflet has the longest stalk out of each group of three and has a pointed tip. Buds are visible and hairy, without scales. Size is wide ranging from 4"-14" long.
Flowers/Fruit: Flowers are small, yellowish and bloom May through July. Fruits are small and smooth, white, ball-shaped, and clustered. Appear August through November.

Form/Habitat:Grows as an erect shrub, trailing vine, or climber. Poison Ivy can grow in a wide range of soils from rich and moist textures to poor and dry.

Interesting Fact: WATCH OUT! All parts of this plant contain heavy nonviolatle oil that causes inflammation of the skin, with blisters and swelling.

Winter Identification: is tough. There are not many distinguishing features for this plant through the winter. Plant remains poisonous but the poison causing oil is much reduced. Occasionally, berries will remain on the plant through winter if they have not fallen off or been eaten.

NWI Status: FAC
Click here to return to the Angiosperm Index page.

Click here to return to the Virtual Herbarium Home Page.