Although the name indicates this fern is from the Aleutian islands, Adiantum aleuticum is native throughout the western United States and into northern Mexico. Adiantum aleuticum can also be found in a few eastern US states (Pennsylvania, West Virginia, and Wisconsin). Adiantum aleuticum is similar in form to Adiantum pedatum with its fan-shaped, finger-like fronds atop a thin black stalk. The cultivar Adiantum aleuticum 'Imbricatum' is a dwarf form of this lovely clump-forming fern that matures at 10" tall, which is about half the height of the typical species. Like Michael Phelps, Adiantum aleuticum is much more robust in a moist environment with a few hours of morning sun.