Results 81 to 90 of about 1,047 (184)

ATLAS DE LAS ESPORAS DE PTERIDÓFITOS DE CHIPAQUE (CUNDINAMARCA, COLOMBIA)

open access: yesCaldasia, 2006
Se describen las esporas de 53 especies de pteridófitas (helechos y plantas afines)agrupadas en 25 géneros y 17 familias, presentes en la vereda Marilandia, municipiode Chipaque, Cundinamarca.
CONTRERAS-DUARTE ANDRÉS RICARDO   +2 more
doaj  

Morphoanatomical study of the rhizome in Dennstaedtiaceae (Pteridophyta)

open access: yes, 2015
Dennstaedtiaceae é uma família monofilética de samambaias leptosporangiadas, constituída por cerca de 10-12 gêneros e aproximadamente 200 espécies de distribuição sub-cosmopolita.
Viana, Ivan Becari
core  

Invasion impact by Pteridium arachnoideum (Kaulf.) Maxon (Dennstaedtiaceae) on a neotropical savanna

open access: yesActa Botânica Brasílica, 2015
Whether management intervention is required to control biological invasions depends primarily on demonstrating species losses resulting from such invasions. Brackens of the Pteridium genus are currently regarded as a problem species that act as important
Natalia Guerin, Giselda Durigan
doaj   +1 more source

Subspecies of Hypolepis rugosula (Dennstaedtiaceae; Pteridophyta) around the world: morphological and biogeographic perspectives

open access: yesActa Botânica Brasílica, 2014
The "Hypolepis rugosula complex" has been the subject of great debate among pteridologists: some have considered H. rugosula a single subcosmopolitan (or circum-Antarctic) species, whereas others have considered it a species-complex, encompassing several
Pedro Bond Schwartsburd, Jefferson Prado
doaj   +1 more source

Taxonomic Status of Diploid Southern Hemisphere Brackens (Pteridium: Dennstaedtiaceae)

open access: yesTelopea, 2012
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 Austral/South American clade of two taxa.
openaire   +2 more sources

The first record of the endangered fern Hypolepis distans Hook. (Dennstaedtiaceae) on the Australian mainland

open access: yes, 2017
The terrestrial fern Hypolepis distans (Dennstaedtiaceae) is recorded as indigenous to New Zealand and Tasmania. The fern was not known from New South Wales or the Australian mainland until recently.
Mills, Kevin
core   +1 more source

Bryophyte and pteridophyte spores and other palynomorphs in quaternary marine sediments from Campos Basin, southeastern Brazil: Core BU-91-GL-05

open access: yesActa Botânica Brasílica, 2015
This paper presents morphological descriptions and ecological data of cryptogam spores and other non-pollen palynomorphs from Quaternary sediments of Campos Basin, Rio de Janeiro, SE Brazil.
Aline Gonçalves de Freitas   +4 more
doaj   +1 more source

Towards a taxonomic revision of Pteridium (Dennstaedtiaceae)

open access: yes, 2004
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

[New species of Dennstaedtia (Filicales: Dennstaedtiaceae) to Mexico].

open access: yesRevista de biologia tropical, 2003
Dennstaedtia gracilis A. Rojas et Tejero (Dennstaedtiaceae) is herein described and illustrated as a new species endemic to Mexico. Its belongs to the group of winged adaxial secondary costae species but it differs by the combination of characters as smaller fronds, deltate pinnules and lobed segment apex.
Alexander Fco, Rojas-Alvarado   +1 more
openaire   +1 more source

A New Species of Microlepia (Dennstaedtiaceae) from Mt. Micangshan, China

open access: yesAmerican Fern Journal, 2006
A new species, Microlepia micangshanensis (Dennstaedtiaceae), is described and illustrated from the northern slope of Mt. Micangshan in Hanzhong City of Shaanxi Province, China. The genus Microlepia (Dennstaedtiaceae) consists of ca 70 species, distributed mainly in tropical and subtropical regions of Asia, with a few in Africa and Australia and one in
Guo, Xiao-Si, Li, Bin
openaire   +3 more sources

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