Infrageneric Revision of the Fern Genus Deparia (Athyriaceae, Aspleniineae, Polypodiales)
Abstract—
Current molecular phylogenetic analyses support the monophyly and circumscription of the athyrioid fern genus Deparia (Athyriaceae), which includes previously recognized genera including Athyriopsis, ×Depazium, Dictyodroma, Dryoathyrium (= Parathyrium), Lunathyrium, and Neotriblemma (= Triblemma Ching), and ×Neotribleparia. This broad generic concept has been adopted in several recent taxonomic treatments, including the Pteridophyte Phylogeny Group I. However, the infrageneric taxonomy of Deparia still needs further revision. In this study, we provide a new infrageneric classification with five sections and three subsections based on the phylogenetic evidence. We recognize two new sections, sect. Dictyodroma and sect. Erectus , and two new subsections, sect. Deparia subsect. Caespites and subsect. Athyriopsis . In addition, we provide a key to the sections and subsections, a table of diagnostic characters, new combinations for three Deparia and one Diplazium species, and a list of species assigned to the sections/subsections. Hybrids derived from crosses between the sections and subsections are also noted.
Current molecular phylogenetic analyses support the monophyly and circumscription of the athyrioid fern genus Deparia (Athyriaceae), which includes previously recognized genera including Athyriopsis, ×Depazium, Dictyodroma, Dryoathyrium (= Parathyrium), Lunathyrium, and Neotriblemma (= Triblemma Ching), and ×Neotribleparia. This broad generic concept has been adopted in several recent taxonomic treatments, including the Pteridophyte Phylogeny Group I. However, the infrageneric taxonomy of Deparia still needs further revision. In this study, we provide a new infrageneric classification with five sections and three subsections based on the phylogenetic evidence. We recognize two new sections, sect. Dictyodroma and sect. Erectus , and two new subsections, sect. Deparia subsect. Caespites and subsect. Athyriopsis . In addition, we provide a key to the sections and subsections, a table of diagnostic characters, new combinations for three Deparia and one Diplazium species, and a list of species assigned to the sections/subsections. Hybrids derived from crosses between the sections and subsections are also noted.
Keywords: Athyrioids; Dictyodroma; sect. Erectus; taxonomy
Document Type: Research Article
Publication date: 10 September 2018
- Systematic Botany is the scientific journal of the American Society of Plant Taxonomists and publishes four issues per year.
2011 Impact Factor: 1.517
2011 ISI Journal Citation Reports® Rankings: 87/190 - Plant Sciences
34/45 - Evolutionary Biology - Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content