Brook Alder
Alnus maritima (Marshall) Muhl. ex Nutt.

Alnus maritima is a shrub or small tree belonging to the Betulaceae family. It is native to the United States and occurs naturally in three separate populations: Oklahoma, Georgia, and the Delmarva Peninsula, which includes Maryland and Delaware.
Description
Alnus maritima (Brook Alder) is a member of the Betulaceae family and is found in disjunct populations in the United States. Its native range includes Oklahoma, Georgia, and the Delmarva Peninsula, where it is present in Maryland and Delaware. The species was first described in 1842 and is not found outside of these regions.
Other common names
Brook AlderSeaside Alder
Distribution
Belgium · France · The Netherlands · Great Britain · Global · Delaware · Georgia · Maryland · Oklahoma
Synonyms
Betula-alnus maritimaAlnus maritima subsp. georgiensisAlnus maritima subsp. oklahomensisAlnus metoporinaAlnus oblongata var. oblongaAlnus maritima subsp. metoporinaAlnus maritima var. metoporina