New combinations and an overview of Cyathea subg. Hymenophyllopsis (Cyatheaceae)

  title={New combinations and an overview of Cyathea subg. Hymenophyllopsis (Cyatheaceae)},
  author={Maarten J.M. Christenhusz},
Several molecular phylogenetic analyses have recently shown that the family Hymenophyllopsidaceae, endemic to the Guayana Shield, is embedded within the tree fern genus Cyathea . This placement of Hymenophyllopsis necessitates six new combinations, and two new names, because the combinations already exist in Cyathea . These are provided here, together with their basionyms, synonyms, type information and distribution. 
Three new scaly tree fern species (Cyathea-Cyatheaceae) from the Amotape-Huancabamba Zone and their biogeographic context
Abstract Three species of the genus Cyathea from the sandstone areas of the Amotape-Huancabamba zone are described as new to science: Cyathea abrapatriciana and C. oreopteroides from northern PeruExpand
Taxonomic Revision of Cyathea, Clade Hymenophyllopsis (Cyatheaceae)
A taxonomic revision of Cyathea, clade Hymenophyllopsis, a monophyletic group restricted to the tepuis of the Guiana Shield, a region in northern South America, is presented, recognizing fifteen species, including four newly described here. Expand
The Anatomy and Occurrence of Foliar Nectaries in Cyathea (Cyatheaceae)
The widespread occurrence of foliar nectaries in most New World species of the genus Cyathea is reported, and the anatomy of these glands and the variation in structure among the species is described. Expand
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A linear classification to the extant lycophytes and ferns based on current phylogenetic knowledge is provided, which provides a standardized guide for organisation of fern collections into a more natural sequence. Expand
The scaly tree ferns (Cyatheaceae-Polypodiopsida) of Brazil
The first key covering the family for the whole territory of Brazil is presented, with 51 species in three genera with 17 taxa being endemic to Brazil. Expand
Phylogenetic Placement of the Enigmatic Fern Genus Dracoglossum
It is shown that Dracoglossum does not belong to the genus Tectaria Cav. Expand
The Comparative Anatomy of Hymenophyllopsis and Cyathea (Cyatheaceae): a Striking Case of Heterochrony in Fern Evolution
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Species of Cyathea in America related to the western Pacific species C. decurrens
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Species richness, endemism, and conservation of American tree ferns (Cyatheales)
Analyses of richness and endemism of Cyatheales (tree ferns) in tropical America were performed and evidence of a diversity gradient is presented. For this, the occurrence ranges of 239 species wereExpand
Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
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Phylogenetic relationships of the enigmatic fern families Hymenophyllopsidaceae and Lophosoriaceae: Evidence fromrbcL nucleotide sequences
Both newly-examined families appear to be part of a previously characterized and well-supported clade of tree ferns, and a sister relationship between Lophosoria and Dicksonia and also between Hymenophyllopsis and Cyathea is supported. Expand
A molecular phylogeny of scaly tree ferns (Cyatheaceae).
This work investigates the phylogenetic relationships of scaly tree ferns based on DNA sequence data from five plastid regions and concludes that indusium shape is homoplastic it does contain useful phylogenetic information that supports some of the larger clades recognised. Expand
Spores of the Pteridophyta: Surface, Wall Structure, and Diversity Based on Electron Microscope Studies
This book constitutes a unique, encyclopedic reference work that systematizes and categorizes for the first time in such comprehensive fashion all known fern spores. The dominant feature of the workExpand
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