Aspleniineae is a suborder of
fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except ...
s in the order
Polypodiales. It is equivalent to the
clade eupolypods II in earlier systems;
[ it is also treated as a single very broadly defined family Aspleniaceae.][ The suborder generally corresponds with the order Blechnales as described by ]J. L. Reveal
James Lauritz Reveal (March 29, 1941 – January 9, 2015) was a U.S. botanist best known for his contributions to the genus ''Eriogonum'' and for his work on suprageneric names. His website, at PlantSystematics.org, also presents material on plant ...
in 1993.[ Aspleniineae includes some important ferns, including '' Onoclea sensibilis'', the sensitive fern, which grows as a virtual weed throughout much of its temperate North American range, and ferns of the genus '']Thelypteris
''Thelypteris'' (maiden ferns) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use . In the Pteridophyte Phylogeny Group classific ...
'', a genus that has shown remarkable speciation. It also includes one of the more common horticultural
Horticulture is the branch of agriculture that deals with the art, science, technology, and business of plant cultivation. It includes the cultivation of fruits, vegetables, nuts, seeds, herbs, sprouts, mushrooms, algae, flowers, seaweeds and no ...
ferns, '' Matteuccia struthiopteris'', the ostrich fern.
Taxonomy
In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the group is treated as the suborder Aspleniinae, and divided into 11 families.[ Alternatively, it may be treated as a single, very broadly ]circumscribed
In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius.
Not every po ...
family Aspleniaceae '' sensu lato'', which is then divided into subfamilies.[ The relationship between the two approaches is shown in the table below.
]
Phylogenic relationships
The following diagram shows a likely phylogenic relationship between the families of Aspleniineae (as eupolypods II), based on Lehtonen (2011),[ and Rothfels & al. (2012).][
]
References
{{Taxonbar, from=Q899495
Polypodiales