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Cooper E.D.,University of Sydney | Henwood M.J.,University of Sydney | Brown E.A.,National Herbarium of New South Wales
Molecular Phylogenetics and Evolution

Five molecular markers (chloroplast rbcL and trnL-trnF, mitochondrial nad5-nad4, and nuclear ITS1 and ITS2) were used to investigate membership of the Lepidoziaceae, subfamily Lepidozioideae and relationships between its constituent species. The Lepidozioideae (comprising Lepidozia, Telaranea, Kurzia, Sprucella, Psiloclada) are polyphyletic as are two of its five constituent genera (Telaranea and Kurzia). We find strong support for a monophyletic lineage comprising Lepidozia, Sprucella (nested within Lepidozia), and part of Telaranea. Within this lineage we find partial support for four main clades. Three clades of Telaranea species form consecutive sister relationships to a monophyletic Lepidozia. Relationships within Lepidozia are incompletely resolved. We provide a re-circumscription of the Lepidozioideae that excludes Kurzia, Psiloclada and elements of Telaranea. © 2012 Elsevier Inc. Source

Acrolejeunea arcuata subsp. gradsteinii is described for plants from the Wet Tropics of Queensland, Australia. This subspecies differs in its autoicy, oblong-elliptic underleaves, the female bract lobe not reflexed and with a rounded apex, and the second lobule tooth longer than the first. Ceratolejeunea belangeriana is confirmed for Australia on the basis of an early collection from Norfolk Island, and recent collections from Queensland. Lejeunea tumida is excluded from the flora of Australia, all Australian specimens identified as L. tumida are referable to other species. Lejeunea sordida is confirmed for Norfolk Island on the basis of material previously identified as L. tumida. Hygrolejeunea rostrata is lectotypified and moved from synonymy under L. discreta to synonymy under L. lumbricoides, which is newly reported for Australia from Norfolk Island. Hygrolejeunea norfolkensis is moved from synonymy under L. discreta to synonymy under L. gracilipes, which is newly recorded for Australia on this basis. A lectotype is proposed for Lejeunea helmsiana. © 2013 Magnolia Press. Source

A recent phylogeny of the restiid clade of Poales based on DNA data from the chloroplast genome indicates that several currently recognised genera of Leptocarpoideae are paraphyletic or polyphyletic. Morphology and DNA data both indicate that the species included in Meeboldina consist of two groups. Moreover, Leptocarpus and the monotypic Stenotalis both appear embedded in Meeboldina, as the latter has been recognised in recent classifications. Consequently, Leptocarpus is here enlarged to encompass Meeboldina and Stenotalis and new subgenera Leptocarpus, Meeboldina and Stenotalis are recognised. The new combination Leptocarpus denmarkicus (Suess.) B.G.Briggs [previously Meeboldina denmarkica Suess.] is provided and the new epithet and combination Leptocarpus scoparius B.G.Briggs [previously Stenotalis ramosissima (Gilg) B.G.Briggs & L.A.S.Johnson, basionym Hypolaena ramosissima Gilg, non Leptocarpus ramosissimus Pillans]. Eight new species from the south of Western Australia are described: L. crebriculmis, L. decipiens, L. depilatus, L. elegans, L. kraussii, L. roycei, L. tephrinus and L. thysananthus. © 2014 Royal Botanic Gardens and Domain Trust. Source

Chambers T.C.,National Herbarium of New South Wales

Stenochlaena is a small but widespread genus confined to the tropics and subtropics of the Old World. A key to the species, updated descriptions, distribution-maps, and detailed drawings are provided. Also included is a key to assist in separating several genera that are most often confused with Stenochlaena. There is morphological evidence suggesting that hybrids may exist between several species in Malesia. Although primarily a rainforest genus, the distribution patterns of the various species of Stenochlaena appear closely related to ecological requirements; the hemiepiphytic members of the genus are most frequently present along forest margins in relatively high light conditions with access to a moist soil or an aquatic environment but not necessarily to perpetually humid atmospheric conditions. © 2013 Royal Botanic Gardens and Domain Trust. Source

Thomson J.A.,National Herbarium of New South Wales

Diploid bracken ferns separate morphologically, genetically and reproductively into a predominantly northern hemisphere clade comprising 11 subspecies placed in Pteridium aquilinum (L.) Kuhn and a predominantly southern hemisphere clade of two taxa. Circumscription of Pteridium esculentum (G.Forst.) Cockayne is here emended to include both taxa of the southern clade, respectively P. esculentum subsp. esculentum from Australasia and P. esculentum subsp. arachnoideum (Kaulf.) J.A.Thomson comb. nov. from Central and South America. © 2012 Royal Botanic Gardens and Domain Trust. Source

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