[Locusts: The Genus Robinia East of the Cascade Mountains of Oregon and Washington]

Black Locust, Acacia, False Acacia

Robinia pseudoacacia

Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima

Close-up of a flower of lack Locust, Acacia, False Acacia: Robinia pseudoacacia (Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima)

Close-up of the flower of black locust as seen in open coniferous woods north of Spokane, Washington........June 22, 2009.

Inflorescence of lack Locust, Acacia, False Acacia: Robinia pseudoacacia (Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima)

Close-up of the inflorescence of black locust as seen in open coniferous woods north of Spokane, Washington........June 22, 2009.

Leaf and thorns of lack Locust, Acacia, False Acacia: Robinia pseudoacacia (Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima) - lack Locust, Acacia, False Acacia: Robinia pseudoacacia (Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima)

Views of a pinnately compound leaf and the straight thorns and habitat of black locust as seen in open coniferous woods north of Spokane, Washington........June 22, 2009.

lack Locust, Acacia, False Acacia: Robinia pseudoacacia (Synonyms: Robinia pseudo-acacia, Robinia pseudoacacia var. pyramidalis, Robinia pseudoacacia var. rectissima)

A black locust blooming along the valley trail about one and one-half miles uphill to the northwest of the Painted Rocks trailhead, Little Spokane River Natural Area........July 5, 2011.

Paul Slichter