Results 171 to 180 of about 2,756 (213)

Morphology of Acanthophora nayadiformis (Ceramiales, Rhodophyta)

Phycologia, 2002
Acanthophora nayadiformis is a perennial species of red alga that overwinters by means of a rhizomatous prostrate system; both reproductive and vegetative plants are also able to spread by means of specialized vegetative propagules that have never been reported in other Acanthophora species.
Cecere E, Perrone C
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THE ULTRASTRUCTURE OF CARPOSPOROGENESIS IN CALOGLOSSA LEPRIEURII (DELESSERIACEAE, CERAMIALES)

American Journal of Botany, 1977
Carposporogenesis in Caloglossa leprieurii is divided into three cytological stages. At stage I, the young spores have few plastids and little starch. Abundant dictyosomes secrete a gelatinous wall layer in scale‐like units.
Richard E. Triemer, Aurea C. Vasconcelos
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Auxiliary Cells in the Ceramiales

Nature, 1964
DREW1 rightly commented on the need for critical re-examination of many phycological concepts which have been accepted without question, but which need to be re-considered because the supporting data are either of considerable age and unconfirmed, or even known to be incorrect.
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Sphingosine derivatives from red algae of the ceramiales

Phytochemistry, 1978
Abstract (+)-2( S )- N -Acetamido-3( R )-acetoxyoctadecan-1-ol, a diacetate of dihydrosphingosine, and fatty acid amides of (−)-2( S )-amino-3( R )-hydroxyoctadec-4( E )-en-1-ol (sphingosine) have been isolated from extracts of Hawaiian Laurencia nidifica and Amansia glomerata , respectively.
John H. Cardellina, Richard E. Moore
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New terminology for sympodial growth in the Ceramiales (Rhodophyta)

Phycologia, 1984
Abstract ‘Sympodial branching’ is a broad term describing a form of branching that occurs widely in the plant kingdom. It is expressed in different plant groups in various ways according to the basic structure of the plant, but it generally depends upon the activity of a series of determinate branches, the lower parts of which successively form the ...
Richard E. Norris, Elise M. Wollaston, Murray J. Parsons   +2 more
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Chromosome counts in three species of Polysiphonia (Ceramiales, Rhodophyta)

Phycologia, 1999
Abstract Chromosome numbers are reported for three Polysiphonia species from Korea. Cytological investigation revealed the presence of 31 bivalents (N = 31) for P. harlandii Harvey, 28 bivalents (N = 28) for P. yendoi Segi, and 30 bivalents (N = 30) for P. decumbens Segi.
M. S. Kim, Y-S. Keum, I. K. Lee
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Species diversity of the genusOsmundea(Ceramiales, Rhodophyta) in the Macaronesian region

Journal of Phycology, 2016
Species diversity within the genusOsmundeain the Macaronesian region was explored by conducting a comprehensive sampling in the Azores, the Canary, and the Madeira archipelagos. Toward identification, all specimens were first observed alive to verify the absence of corps en cerise, a diagnostic character for the genus and morphometric data were ...
Machín-Sánchez, María, Rousseau, Florence, Le Gall, Line, Cassano, Valéria, Neto, Ana, Sentíes, Abel, T. Fujii, Mutue, Gil-Rodríguez, María Candelaria   +7 more
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Agarans from the red seaweed Polysiphonia nigrescens (Rhodomelaceae, Ceramiales)

Carbohydrate Research, 2008
Polysiphonia nigrescens was sequentially extracted with water at room temperature, 70 and 90 degrees C. The extracts were analyzed and the major one, isolated at 70 degrees C, was fractionated by ion-exchange chromatography, eluting with water and solutions of increasing sodium chloride concentration; five main fractions were separated.
Héctor J, Prado, Marina, Ciancia, María C, Matulewicz   +2 more
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The xylogalactan sulfate from Chondria macrocarpa (Ceramiales, Rhodophyta)

Hydrobiologia, 1990
A structure is proposed for the complex xylogalactan sulfate from Chondria macrocarpa. The hot-water extract of C. macrocarpa was desulfated or alkali-treated and Smith degraded. Constituent sugars and their substitution patterns were identified using a modified Hakamori methylation procedure suited to sulfated polysaccharides and a double hydrolysis ...
Richard H. Furneaux, Thomas T. Stevenson
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Physiological ecology of four Polysiphonia species (Rhodophyta, Ceramiales)

Marine Biology, 1974
Photosynthesis and respiration of 4 species of the marine red algal genus Polysiphonia were evaluated under a variety of light, temperature and salinity conditions. The manometric results were compared with the local distribution and abundance of each species. The species can be separated into two distinct categories based on their overall distribution
Fralick, Richard A., Mathieson, Arthur C.   +1 more
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