Results 141 to 150 of about 783 (177)
HARDLY A RELICT: FREEZING AND THE EVOLUTION OF VESSELLESS WOOD IN WINTERACEAE
Evolution; International Journal of Organic Evolution, 2002 The Winteraceae are traditionally regarded as the least-specialized descendents of the first flowering plants, based largely on their lack of xylem vessels.
Timothy J. Brodribb, Taylor S Feild
exaly +6 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Leaf flavonoid patterns in the winteraceae
Phytochemistry, 1982Abstract In a leaf flavonoid survey of 59 specimens of the Winteraceae and related families, representing nine genera, luteolin 7,3′-dimethyl ether (in 77%) and flavonols (in 81%) were found to be major constituents. Indeed the high incidence of luteolin 7,3′-dimethyl ether chemically isolates the family from all other angiosperm groups, including ...
Christine A Williams
exaly +5 more sources
Journal of Biogeography, 2014 Aim: Our aim was to implement a molecular dating analysis and assess divergence times among taxa of Winteraceae. This enabled us to test hypotheses of vicariance versus long-distance dispersal to explain intercontinental disjunctions in the family ...
Jeremy Bruhl, Andrew Ford
exaly +2 more sources
The First Record of Fossil Wood of Winteraceae from the Upper Cretaceous of Antarctica
Annals of Botany, 2000 Fossil wood of the Winteraceae from the Upper Cretaceous sediments of James Ross Island, Antarctic Peninsula, is described here for the first time. The specimen is characterized by the absence of vessels, rays of two distinct sizes and tracheids with one–
Francis, Jane E., Poole, Imogen
exaly +2 more sources
Cytotoxic sesquiterpenoids from Winteraceae of Caledonian rainforest
Phytochemistry, 2009One secobutanolide, two butanolides and six drimane sesquiterpenoids were isolated from the bark and leaves of Zygogynum pancheri and Zygogynum acsmithii (Winteraceae) along with six known drimanes, isodrimanial, 1beta-O-p-methoxy-E-cinnamoyl-bemadienolide, 7-ketoisodrimenin, drimenin, polygodial and 1beta-E-cinnamoyl-6alpha-hydroxypolygodial.
Marc Litaudon +2 more
exaly +3 more sources
Evolutionary trends in Winteraceae pollen
Grana, 2002The Winteraceae, being considered as one of the most basal angiosperm families, has been extensively studied palynologically. The present study reviews the characters dispersal unit (monad versus tetrad) and size of the lumina in the tectum in the light of recent molecular research.
Raymond Van der Ham +1 more
openaire +1 more source
Anatomy of the Secondary Phloem in Winteraceae
IAWA Journal, 1984The secondary phloem of nine species in five genera of Winteraceae was examined with regard to features that could serve for taxonomic and phylogenetic evaluation of the family. The species examined were as follows: Bubbia pauciflora, B. semecarpoides, Drimys lanceolata, D.
Katherine Esau, Vernon I. Cheadle
openaire +1 more source
TAXON, 1988
SummaryAfter a review of a number of characters of the Winteraceae, two topics are discussed. Firstly, it is argued that determination factors of place, size, form, and function of petals and stamens can become unlocked and fixed again in a different way, giving rise to a new form: the stamen with a petaloid appendage, which consequently has to be ...
openaire +1 more source
SummaryAfter a review of a number of characters of the Winteraceae, two topics are discussed. Firstly, it is argued that determination factors of place, size, form, and function of petals and stamens can become unlocked and fixed again in a different way, giving rise to a new form: the stamen with a petaloid appendage, which consequently has to be ...
openaire +1 more source
Placentation in Exospermum stipitatum (Winteraceae)
Botanical Gazette, 1978Exospermum, of the primitive vesselless angiosperm family Winteraceae, has been described as differing from other genera in the family in having ovules scattered over the internal walls of the carpels. Studies of developing carpels with the scanning electron microscope revealed that ovules are initiated in a single row on each of the two placentas, as ...
F. B. Sampson, Shirley C. Tucker
openaire +1 more source
Analysis of the Contents of Oil Cells in Tasmannia lanceolata(Poir.) A. C. Smith (Winteraceae)
Annals of Botany, 2000 The simple, robust oil cells found in leaves of Tasmannia lanceolata (Poir.) A. C. Smith (Winteraceae) are shown to contain a preponderance of the bioactive compound polygodial using both direct sampling and GCMS analysis of cell contents and Fourier ...
Read, CD (15775268) +1 more
exaly +1 more source