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Cyathea lamoureuxii (Cyatheaceae): a remarkable new species from the Papuan Peninsula of New Guinea Naturalis
Takeuchi, W..
Cyathea lamoureuxii is described from recent exploratory surveys in Papua New Guinea. The new fern is unique among eastern Malesian congeners for its undivided pinnae, and is also the only member of its subgenus with manifestly pinnate leaves. The manner in which the novelty combines diagnostic features across infrageneric lines underscores the difficulties in drawing absolute separations at the subgenus and sectional levels.
Tipo: Article / Letter to the editor Palavras-chave: Cyathea; Schizocaena; Sphaeropteris; Ultrabasics.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/524619
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Palynological analysis of Sphaeropteris gardneri (Cyatheaceae, Pteridophyta) Anais da ABC (AABC)
Marquez,Gonzalo J.; Morbelli,Marta A.; Giudice,Gabriela E..
The spore morphology and wall ultrastructure of Sphaeropteris gardneri (Hook.) R.M. Tryon from Brazil were analyzed with LM, SEM and TEM. The spores are trilete with an ornamentation formed of short low ridges with spines in their margins. The exospore is 2.5μm thick, two- layered in section and single or branched channels are present. The perispore is 1.2μm thick and two-layered. The inner layer has three strata: the inner stratum is formed of a network of branched and fused threads, the middle stratum has threads with a radial orientation and in the outer stratum thin, dark fibres are immersed in a less dense contrasted matrix. The outer layer of the perispore is the one that forms the echinate-ridges and is constituted of threads arranged in a compact...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sphaeropteris; Spores; Morphology; Ultrastructure.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200012
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The scaly tree ferns (Cyatheaceae-Polypodiopsida) of Brazil Acta Botanica
Weigand,Anna; Lehnert,Marcus.
ABSTRACT A synopsis of all scaly tree fern species (Cyatheaceae) occurring in Brazil is presented. We recognize 51 species in three genera [Sphaeropteris one species, Alsophila four species (one subspecies, two varieties), and Cyathea 45 species (one variety) ] with 17 taxa being endemic to Brazil. One hybrid endemic to Brazil is recognized. Further included are five species that have not yet been recorded in Brazil, but are expected here because they are found in adjacent countries and occur literally on the border with Brazil. We present the first key covering the family for the whole territory of Brazil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alsophila; Cyathea; Cyatheaceae; Pteridophytes; Sphaeropteris; Synoptical key; Systematics.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300336
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