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Robinia pseudoacacia

Common Name: Black Locust

Scientific Classification

Kingdom: Plantae
Phylum: Tracheophyta
Class: Magnoliopsida
Order: Fabales
Family: Fabaceae
Genus: Robinia
Species: Robinia pseudoacacia

Conservation Status

Identifying Features

Black locust trees are medium sized trees, growing up to 80 feet tall. Their bark is gray and deeply ridged.

The leaves are alternate and compund. the leaves are between 6 to 12" long and have between 6 to 20 oval, rounded leaflets.

Habitat & Range

Black locust trees live in young forest stands, and can be found in fields or other areas with full sun. Their current range reaches across the eastern United States, although its native range is much smaller, centralized around the Appalachain Mountains. They have been planted intentionally as an ornamental.

Life Cycle

Black locust flowers from May to June. Flowers are white, droop, and are very fragrant.

Featured image by James Dake.


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