Phylogeny of the Lady Fern Group, Tribe Physematieae (Dryopteridaceae), Based on Chloroplast rbcL Gene Sequences
✍ Scribed by Ryosuke Sano; Masayuki Takamiya; Motomi Ito; Siro Kurita; Mitsuyasu Hasebe
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 210 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1055-7903
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✦ Synopsis
Nucleotide sequences of the chloroplast gene rbcL from 42 species of the fern tribe Physematieae (Dryopteridaceae) were analyzed to gain insights into the inter-and intrageneric relationships and the generic circumscriptions in the tribe. The phylogenetic relationships were inferred using the neighbor-joining and maximum-parsimony methods, and both methods produced largely congruent trees. These trees reveal that: (1) Athyrium, Cornopteris, Pseudocystopteris, and Anisocampium form a clade and Athyrium is polyphyletic; (2) Deparia sensu lato is monophyletic and Dictyodroma formosana is included in the Deparia clade; (3) Diplaziopsis forms a clade with Homalosorus, which is isolated from the other genera of the Physematieae; (4) Monomelangium is included in the monophyletic Diplazium clade; and (5) Rhachidosorus is not closely related to either Athyrium or Diplazium.