Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae)
Revwattsia fragilis (Watts) D.L. Jones (Dryopteridaceae), originally described as a Polystichum Roth by the pioneer Australian botanist Reverend W.W. Watts in 1914, is a rare epiphytic fern endemic to northeastern Queensland, Australia. Known from only a few populations, it is restricted to tropical...
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Pensoft Publishers
2012-07-01
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| Series: | PhytoKeys |
| Online Access: | http://phytokeys.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1429 |
| _version_ | 1819092684827000832 |
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| author | Meghan McKeown Michael Sundue David Barrington |
| author_facet | Meghan McKeown Michael Sundue David Barrington |
| author_sort | Meghan McKeown |
| collection | DOAJ |
| description | Revwattsia fragilis (Watts) D.L. Jones (Dryopteridaceae), originally described as a Polystichum Roth by the pioneer Australian botanist Reverend W.W. Watts in 1914, is a rare epiphytic fern endemic to northeastern Queensland, Australia. Known from only a few populations, it is restricted to tropical rainforests in the Atherton Tablelands. We used the cpDNA markers psbA-trnH, rbcL, rbcL-accD, rps4-trnS, trnG-trnR, trnL-trnF, and trnP-petG to infer the relationships of Revwattsia fragilis within Dryopteridaceae. Based on our molecular analysis, we were able to reject Watts’s 1914 hypothesis of a close relationship to Polystichum. Its closest allies are a suite of Asian Dryopteris Adans. species including D. labordei, D. gymnosora, D. erythrosora and D. cystolepidota; maintaining Revwattsia renders Dryopteris paraphyletic. The epiphytic habit and distinctive long-creeping rhizome of Revwattsia appear to be autapomorphies and do not warrant its generic status. In the course of our investigation we confirmed that polyphyly of Dryopteris is also sustained by the inclusion of Acrorumohra (H.Itô)H.Itô, Acrophorus C.Presl, Arachniodes Blume, Diacalpe Blume, Dryopsis Holttum & P.J.Edwards, and Peranema D.Don. The epithet fragilis is occupied in Dryopteris, therefore we provide the name Dryopteris wattsii nom. nov. to accommodate R. fragilis in Dryopteris. |
| first_indexed | 2024-12-21T22:59:32Z |
| format | Article |
| id | doaj.art-a5f5313c60994261a3404bb4cfc70ca2 |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-12-21T22:59:32Z |
| publishDate | 2012-07-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | PhytoKeys |
| spelling | doaj.art-a5f5313c60994261a3404bb4cfc70ca22022-12-21T18:47:21ZengPensoft PublishersPhytoKeys1314-20111314-20032012-07-01140435610.3897/phytokeys.14.34461429Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae)Meghan McKeownMichael SundueDavid BarringtonRevwattsia fragilis (Watts) D.L. Jones (Dryopteridaceae), originally described as a Polystichum Roth by the pioneer Australian botanist Reverend W.W. Watts in 1914, is a rare epiphytic fern endemic to northeastern Queensland, Australia. Known from only a few populations, it is restricted to tropical rainforests in the Atherton Tablelands. We used the cpDNA markers psbA-trnH, rbcL, rbcL-accD, rps4-trnS, trnG-trnR, trnL-trnF, and trnP-petG to infer the relationships of Revwattsia fragilis within Dryopteridaceae. Based on our molecular analysis, we were able to reject Watts’s 1914 hypothesis of a close relationship to Polystichum. Its closest allies are a suite of Asian Dryopteris Adans. species including D. labordei, D. gymnosora, D. erythrosora and D. cystolepidota; maintaining Revwattsia renders Dryopteris paraphyletic. The epiphytic habit and distinctive long-creeping rhizome of Revwattsia appear to be autapomorphies and do not warrant its generic status. In the course of our investigation we confirmed that polyphyly of Dryopteris is also sustained by the inclusion of Acrorumohra (H.Itô)H.Itô, Acrophorus C.Presl, Arachniodes Blume, Diacalpe Blume, Dryopsis Holttum & P.J.Edwards, and Peranema D.Don. The epithet fragilis is occupied in Dryopteris, therefore we provide the name Dryopteris wattsii nom. nov. to accommodate R. fragilis in Dryopteris.http://phytokeys.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1429 |
| spellingShingle | Meghan McKeown Michael Sundue David Barrington Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) PhytoKeys |
| title | Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) |
| title_full | Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) |
| title_fullStr | Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) |
| title_full_unstemmed | Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) |
| title_short | Phylogenetic analyses place the Australian monotypic Revwattsia in Dryopteris (Dryopteridaceae) |
| title_sort | phylogenetic analyses place the australian monotypic revwattsia in dryopteris dryopteridaceae |
| url | http://phytokeys.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1429 |
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