Results 51 to 60 of about 118 (73)

凤尾蕨属的分子系统学研究

, 2013
凤尾蕨属（Pteris）为凤尾蕨科（Pteridaceae）凤尾蕨亚科（subfam. Pteridoideae）成员，该属为林奈于1753年正式建立，全世界约有200-250种，主要分布于热带和亚热带地区，除了南极洲外，其余四大洲均有凤尾蕨属植物分布。围绕凤尾蕨属已开展了细胞学和形态学等方面的研究，但分子系统学的研究还很欠缺，属下的分子系统关系还不明确，许多种类的系统位置并不清楚。本论文主要的研究目的包括：界定凤尾蕨属属的范围；确定该属属下主要的进化单元及种间的系统发育关系 ...
张良
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Pteridaceae (Polypodiopsida) do Campo Experimental da Embrapa Amazônia Oriental, município de Moju, estado do Pará, Brasil [PDF]

Barros I.C.L., Bastos C.C.C., Berry P.E., Boldrin A.H.L., Brade A.C., Brade A.C., Brade A.C., Brade A.C., Braga R., Ching R.C., Copeland E.B., Crane E.H., Cremers G., Felix L.P., Fernandes S.R., Fidalgo O., Hyeronymus G., Kelloff C.L., Kramer K. U., Kramer K.U., Krieger L., Labiak P.H., Lellinger D. B., Lellinger D.B., Lellinger D.B., Maciel S., Marcio Roberto Pietrobom, Melo L.C.N., Mickel J.T., Moran R.C, Moran R.C, Moran R.C, Moran R.C, Moran R.C, Moran R.C, Moran R.C., Mori S.A., Nauman C.E., Nonato F.R., Oliveira E.C.P., Paciencia M.B., Parris B.S., Peixoto M.F., Pichi-Sermolli R.E.G., Pietrobom M.R., Pietrobom M.R., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Prado J., Rodrigues S.T., Rodrigues-Jr. C.E., Sampaio A.J., Sampaio A.J., Schwartsburd P.B., Sebastião Maciel, Sehnem A., Sehnem A., Serrão D.R., Smith A.R, Smith A.R., Tryon R.M., Tryon R.M., Tryon R.M., Tryon R.M., Windisch P.G., Windisch P.G., Windisch P.G., Windisch P.G., Winter S.L.S.   +77 more
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Validation of the Name Veratrum hybridum [PDF]

Wendy B Zomlefer
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Virginia [PDF]

Derick B. Poindexter, Hrusa F., Naczi R. F. C., Rollins R. C., Zack E. Murrell   +4 more
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Comparative Insights Into Convergent Evolution [PDF]

, 2018
Oyston, Jack
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Phylogeny of the fern subfamily Pteridoideae (Pteridaceae; Pteridophyta), with the description of a new genus: Gastoniella

Molecular Phylogenetics and Evolution, 2017
As the second most genera-rich fern family, Pteridaceae contain more than 1000 species contributing to ca. 10% of extant leptosporangiate fern diversity. The subfamily Pteridoideae is one of the five subfamilies often recognized. The circumscription of Pteridoideae has not been clear.
Liang Zhang, Xin-Mao Zhou, Ngan Thi Lu
exaly   +5 more sources

Taxonomy and spore morphology of selected taxa of Cheilanthoideae and Pteridoideae (Pteridaceae) from Pakistan

Microscopy Research and Technique, 2021
AbstractTaxonomy and spore morphology of 12 taxa of Cheilanthoideae and Pteridoideae (Pteridaceae, Polypodiales) from Pakistan is illustrated with scanning electron microscopy images based upon the specimens collected from various localities. A total of six genera belong to 12 taxa viz. Actiniopteris radiata, Aleuritopteris albomarginata, A.
Muhammad Irfan, Gul Jan, Waheed Murad
exaly   +4 more sources

Typification of the name Pteris multifida (Pteridaceae subfamily Pteridoideae)

Phytotaxa, 2016
Pteris multifida, sometimes called ‘spider fern’, ‘spider brake’, ‘Chinese brake’, or ‘Huguenot fern’, is characterized by its distal pinnae of mature leaves being simple, adnate and decurrent to the rachis in at least the distal ½ of the leaf, and the venation is entirely free. The species is native to subtropical Asia and was probably first collected
Jaideep Mazumdar, Marcelo D. Arana
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Typification of the names associated with Anogramma lorentzii (Pteridaceae: Pteridoideae)

Phytotaxa, 2016
The genus Anogramma Link (1841: 137) comprises about six species of tropical and temperate regions of America, Ascension Island, southern Europe and Africa east to New Zealand (Tryon & Tryon 1982). The genus is distinguished especially by the annual habit of the sporophyte and the persistence of the gametophyte by means of tubercles.
Marcelo D. Arana, Antonia Oggero, JUAN P. ANGELI   +2 more
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Phylogenetic comparative morphological analysis of fern spores in subfamily Pteridoideae (Pteridaceae, Pteridophyta)

Microscopy Research and Technique, 2021
AbstractScanning electron microscopy (SEM) was used to characterize spore morphology of 24 taxa of the subfamily Pteridoideae C. Chr. ex Crabbe, Jermy & Mickel of the family Pteridaceae E.D.M. Kirchn. The family is considered to be one of the most taxonomically confusing families due to its high level of polymorphism. The standardized data on spore
А. В. Ваганов
openalex   +3 more sources