[Wood Sorrels of the Columbia River Gorge of Oregon and Washington]

Great Oxalis, Great Wood-sorrel, Threeleaf Wood-sorrel, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel, Trillium-leaf Wood-sorrel

Oxalis trilliifolia

Synonym: Hesperoxalis trilliifolia

Great Oxalis, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel: Oxalis trilliifolia

Great oxalis as seen along the Angels Rest Trail in the western Columbia River Gorge........July 5, 2009.

Flowers and seed pods of Great Oxalis, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel: Oxalis trilliifolia

A close-up of the flowers and erect seed pods of great oxalis as seen along the Angels Rest Trail in the western Columbia River Gorge.......July 5, 2009. This species can be identified by the multiple, pendant white flowers in the inflorescence.

Flowers of Great Oxalis, Great Wood-sorrel, Threeleaf Wood-sorrel, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel, Trillium-leaf Wood-sorrel: Oxalis trilliifolia -- Corolla and sepals of Great Oxalis, Great Wood-sorrel, Threeleaf Wood-sorrel, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel, Trillium-leaf Wood-sorrel: Oxalis trilliifolia

Close-up views of the flowers of great oxalis as seen along the Angels Rest Trail in the Columbia River Gorge.........August 20, 2009.

"Shamrock" leaf of Great Oxalis, Trillium-leaved Oxalis, Trillium-leaf Wood Sorrel: Oxalis trilliifolia

A close-up of the "shamrock"- like leaf of great oxalis as seen along the Angels Rest Trail in the western Columbia River Gorge........July 5, 2009.

Paul Slichter