Aspleniineae
Suborder of ferns
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Aspleniineae is a suborder of ferns in the order Polypodiales. It is equivalent to the clade eupolypods II in earlier systems;[2][3] it is also treated as a single very broadly defined family Aspleniaceae.[4] The suborder generally corresponds with the order Blechnales as described by J. L. Reveal in 1993.[5] 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, a genus that has shown remarkable speciation. It also includes one of the more common horticultural ferns, Matteuccia struthiopteris, the ostrich fern.
| Aspleniineae Temporal range: [1] | |
|---|---|
| |
| Asplenium adiantum-nigrum, the black spleenwort | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae H.Schneid. & C.J.Rothf.[2] |
| Families[2] | |
| |
| Synonyms | |
Taxonomy
In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the group is treated as the suborder Aspleniinae, and divided into 11 families.[2] Alternatively, it may be treated as a single, very broadly circumscribed family Aspleniaceae sensu lato, which is then divided into subfamilies.[4] The relationship between the two approaches is shown in the table below.
| PPG I[2] | Christenhusz & Chase (2014)[4] |
|---|---|
| Suborder Aspleniineae H.Schneid. & C.J.Rothf | Family Aspleniaceae Newman |
| Family Cystopteridaceae Shmakov | Subfamily Cystopteridoideae Ching & Z.R.Wang |
| Family Rhachidosoraceae X.C.Zhang | Subfamily Rhachidosoroideae M.L.Wang & Y.T.Hsieh |
| Family Diplaziopsidaceae X.C.Zhang & Christenh. | Subfamily Diplaziopsidoideae Christenh. |
| Family Desmophlebiaceae Mynssen | (The only genus was described after 2014.) |
| Family Hemidictyaceae Christenh. & H.Schneid. | Subfamily Asplenioideae Link |
| Family Aspleniaceae Newman | |
| Family Woodsiaceae Herter | Subfamily Woodsioideae Schmakov |
| Family Onocleaceae Pic.Serm. | Subfamily Blechnoideae Hook. |
| Family Blechnaceae Newman | |
| Family Athyriaceae Alston | Subfamily Athyrioideae B.K.Nayar |
| Family Thelypteridaceae Ching ex Pic.Serm. | Subfamily Thelypteridoideae C.F.Reed |
Phylogenic relationships
The following diagram shows a likely phylogenic relationship between the families of Aspleniineae (as eupolypods II), based on Lehtonen (2011),[6] and Rothfels & al. (2012).[7]