Athyrium angustum
Encyclopedia
Athyrium angustum is known as the northern lady fern, native to northeastern North America
. It was long included in the superspecies Athyrium filix-femina
, but is now largely recognized as a distinct species.
A. angustum has a more southern counterpart, Athyrium asplenioides
. This species, the southern lady fern, has a broader frond, especially at the base.
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
. It was long included in the superspecies Athyrium filix-femina
Athyrium filix-femina
Athyrium filix-femina is a large, feathery species of fern native throughout most of the temperate Northern Hemisphere, where it is often abundant in damp, shady woodland environments and is often grown for decoration.The plant is caespitose Athyrium filix-femina (Lady Fern or Common Lady-fern)...
, but is now largely recognized as a distinct species.
A. angustum has a more southern counterpart, Athyrium asplenioides
Athyrium asplenioides
Athyrium asplenioides, or Southern lady fern, is a species of the family Athyrium. It is a deciduous fern and reaches a height between 1 and 3 feet...
. This species, the southern lady fern, has a broader frond, especially at the base.