| Abstract Detail
Pteridology Nagalingum, Nathalie S. [1], Gardner, Jessica [1], Perrie, Leon [2]. Phylogenetic identification of select lastreopsid ferns (Dryopteridaceae) . The genus Lastreopsis s.l. (Dryopteridaceae) is paraphyletic with respect to Megalastrum and Rumohra. Recent efforts to address this problem have resulted in segregation of Lastreopsis s.l. into Lastreopsis s.s. and Parapolystichum; furthermore Lastreopsis s.s. has been split into the subgenera Lastreopsis and Rhopalotricha. Notably, as the two genera are morphologically indistinguishable, species can only be assigned to them based on DNA sequence data. The majority of Lastreopsis s.l. species have been assessed using DNA, but there remains nine species that are incertae sedis. We generated sequence data for six of these incertae sedis species to permit placement in either Lastreopsis s.s. or Parapolystichum. We also assessed the phylogenetic position of one species that was assigned to Lastreopsis s.s. in the absence of sequence data, and present new accessions for seven previously studied species. The phylogenetic results indicate that several species require new taxonomic combinations into Parapolystichum. Additionally, the inclusion of new species necessitates reassessment of the subgenera of Lastreopsis. All of the species in this study derived from Australia, New Caledonia, New Zealand and the Pacific, significantly enhancing the understanding of biogeographic patterns across the phylogeny. Log in to add this item to your schedule
1 - Royal Botanic Garden Sydney, Mrs Macquaries Road, Sydney, NSW, 2000, Australia 2 - Museum of New Zealand Te Papa Tongarewa, Wellington , 6011, New Zealand
Keywords: none specified
Presentation Type: Oral Paper Session: 7, Pteridological Section/AFS Location: 203/Savannah International Trade and Convention Center Date: Monday, August 1st, 2016 Time: 11:15 AM Number: 7012 Abstract ID:378 Candidate for Awards:Edgar T. Wherry award |