[The Ginseng Family in the Columbia River Gorge of Oregon and Washington]

English Ivy, English-ivy

Hedera hibernica

Synonym: Hedera helix ssp. hibernica

Leafy vine of Atlantic Ivy: Hedera hibernica (Synonym: Hedera helix ssp. hibernica)

The photo above shows a vine of Atlantic ivy entwining up a tree at the Wachlella Falls trailhead in the western Columbia River Gorge..........March 5, 2006. Note that the leaves of this species are lobed less than one half the distance to the midrib of the leaf. Similar English ivy has leaf blades that are parted more than half the distance into the center of the leaf.

Upper and lower leaf surfaces of Atlantic Ivy: Hedera hibernica (Synonym: Hedera helix ssp. hibernica)Characteristics:

Atlantic ivy is a viny evergreen shrub with many trailing to climbing stems up to 30 meters high. The leathery leaves are triangular to broadly ovate, usually with a point at the tip. The margins range from entire to 3-5 lobed. The blades range from 4-10 cm long.

Flowers are 5-7 mm long and are borne in one to several racemose, globose umbels. The pedicels are 5-15 mm long. The berries are bluish-black and measure 6-9 mm long.


Uses/ Importance:

Historically Atlantic ivy has been used as an evergreen vine or ground cover. Its leaves are fairly attractive although its flowers and fruits are rarely noticed. It is very successful growing in almost complete darkness, so it is able to grow in the dark forests of the Pacific Northwest. Typically it is spread via birds who eat the berries while visiting yards and then eliminate the seeds with the wastes when they return to the forest to roost. The vines grow along the ground, smothering native plants and up onto the trunks of trees. The weight of the vine in the trees often causes the trunk to break, effectively killing the tree.


Habitat:

Besides its use as an ornamental vine and ground cover, Atlantic ivy has become established as a weedy species in many forests west of the Cascades.


Range:

Originally from Europe, Atlantic ivy is now established in forests near metropolitan areas along the west side of the Cascades in Oregon and Washington.

In the Columbia River Gorge it may be found between the elevations of 100'-4000' between the Sandy and Hood Rivers.


Leaf of Atlantic Ivy: Hedera hibernica

Atlantic Ivy: Hedera hibernica

Paul Slichter