[The Barberry Family East of the Cascade Mountains of Oregon and Washington]

Creeping Oregon Grape, Low Oregon Grape

Berberis repens

Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens

Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

Creeping Oregon grape as seen from the trailhead to Canyon Creek in the Klickitat State Wildlife Area of south-central Washington.........May 8, 2009.

Inflorescence of Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)The photo at right shows a close-up of the flower cluster of creeping Oregon grape..........early April 2006.

Characteristics:

Creeping Oregon grape is a much smaller, more compact member of a family valued by landscapers for their bright yellow flowers, evergreen leaves, and bluish berries. It is similar to shining Oregon grape, but is lower and more spreading, with trailing stems (repens means crawling or trailing). It is stoloninferous with stems reaching from 7.5-15 cm in height. The compound pinnate leaves have 5-7 oval leaves, generally less than twice as long as broad. The leaflet margins are edged with 15-43 spinulose teeth, and the upper surface may be glossy or dull.

The compact racemes of bright yellow flowers are found at the apex of the stems. The globose berries are dark blue with a glaucous dusting.

The ripe berries of Creeping Oregon grape were used by Native Americans as food. The berries were eaten raw, fermented into wine, or cooked to make jelly. The roots were used as a source of yellow dye and the alkaloid (berberine) was used as a cure for disorders of the stomach and intestines. The young leaves are palatable to deer.


Habitat:

Creeping Oregon grape is a plant of open grassy to forested areas, often on north-facing slopes in the Columbia River Gorge.


Range:

Creeping Oregon grape may be found east of the Cascade Mts from eastern Washington south through Deschutes and Wasco Counties, Oregon to northeastern California, southern Nevada, New Mexico, and north to South Dakota and Alberta.


Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens) - Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

Creeping Oregon grape as seen left on Baldy Mountain, Strawberry Mt. Wilderness........July 2, 2010. The photo at right shows creeping Oregon grape in bloom on the hillside uphill to the north above Ochoco Forest Camp, Ochoco National Forest.........April 30, 2016.

Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

Creeping Oregon grape in bloom along the Fremont National Recreation Trail #160 in open woods near the middle trailhead on the western slopes of Hager Mountain, Fremont National Forest...........May 19, 2016.

Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens) - Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: Berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

The ripening berries (left) of creeping Oregon grape as seen along the Slide Basin Trail #372, Strawberry Mountain Wilderness..........August 11, 2015. The photo at right shows creeping Oregon grape with flower buds as seen along Forest Road 2901 at a viewpoint looking east across the north end of Summer Lake, Fremont-Winema National Forest........April 30, 2017.

Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)


Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

Creeping Oregon grape from the banks of the North Fork Crooked River near Big Summit Prairie, Ochoco N.F...........5-23-98.

Creeping Oregon Grape, Low Oregon Grape: Berberis repens (Synonyms: berberis aquifolium var. repens, Berberis nana, Berberis sonnei, Mahonia repens, Mahonia sonnei, Odostemon repens)

Creeping Oregon grape from Buckhorn Overlook, the west rim of the Imnaha Canyon, Wallowa-Whitman N.F...........5-30-99.

Paul Slichter