Results 91 to 100 of about 189 (105)

PHLOEM STRUCTURE IN THE CARBONIFEROUS FERN PSARONIUS (MARATTIALES)

American Journal of Botany, 1984
Phloem anatomy in stems of Psaronius is described from coal ball specimens collected at the Berryville, IL and Lewis Creek, KY localities. Phloem completely surrounds the C‐shaped xylem segments, but is more extensively developed on the abaxial side of the trace.
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Jurassic Angiopteris (marattiales) from north yorkshire

Review of Palaeobotany and Palynology, 1987
Abstract Angiopteris blackii Van Konijnenburg-van Cittert from the Middle Jurassic of North Yorkshire is redescribed, based mainly on recently collected material. It is similar to extant species of Angiopteris but differs in its more elongate and relatively pointed sporangia which give the sorus as a whole a distinctive stellate appearance; the ...
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Permineralized Marattiales from the Stephanian and Autunian of central France: a reinvestigation of Grandeuryella renaultii (Stur) Weiss emend

Review of Palaeobotany and Palynology, 1992
Abstract A reinvestigation of specimens initially described by Renault (1883) as fertile Pecopteris oreopteridia and distinguished as Grand'Eurya renaulti Stur (1883) and Grandeuryella renaulti Weiss (1885), is presented. The species diagnosis is amplified to features of pinnule size and morphology, venation, and morphology of synangia, individual ...
Alicia Lesnikowska, Jean Galtier
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Corsinopteris , a new substitute name for Orthotheca ( Marattiales‐Marattiopsida )

TAXON, 2001
Summary Doweld, A. B.: Corsinopteris , a new substitute name for Orthotheca ( Marattiales–Marattiopsida ). – Taxon 50: 1097–1099. 2001. ‐ ISSN 0040–0262.
John McNeill, Alexander B. Doweld
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Two new species of Scolecopteris (Marattiales), sources of Torispora securis Balme and Thymospora thiessenii (Kosanke) Wilson et Venkatachala

Review of Palaeobotany and Palynology, 1997
Abstract Two biostratigraphically significant miospore species, Thymospora thiessenii and Torispora securis, were isolated from marattialean synangia preserved in coal-ball permineralizations from Pennsylvanian strata of the Illinois Basin and Western Interior coal region.
Alicia D. Lesnikowska, Debra A. Willard
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Chemotaxonomy for naturally macerated tree-fern cuticles (Medullosales and Marattiales), Carboniferous Sydney and Mabou Sub-Basins, Nova Scotia, Canada

International Journal of Coal Geology, 2001
Abstract Naturally macerated cuticles (NMC) and one synangium, representing medullosalean and marattialean tree-fern species, from two Carboniferous coalfields in Nova Scotia, Canada, are investigated. The samples were analyzed by infrared spectroscopy (FTIR), and by pyrolysis-gas chromatograph/mass spectrometry (py-Gc/Ms) techniques in search for ...
Erwin L. Zodrow, Maria Mastalerz
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A new species of Scolecopteris (Marattiales, Psaroniaceae) from the early Permian Wuda Tuff Flora

Review of Palaeobotany and Palynology, 2022
Bo Zhang, Dandan Li, Mingli Wan, Weiming Zhou, Josef Pšenička, Jiří Bek, Jun Wang   +6 more
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Review on the Origin, Evolution and Phylogeny of Marattiales

植物学通报, 2000
Zhao-Hua LIU, Jason Hilton, Cheng-Sen LI
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El género Marattia Sw. (Marattiales, Marattiaceae) en el paleotrópico

2001
Rolleri, Cristina, Lavalle, María, Mengascini, Adriana   +2 more
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Corsinopteris , a new substitute name for Orthotheca ( Marattiales‐Marattiopsida )

Taxon, 2001
Alexander Doweld
exaly