Results 251 to 260 of about 236,586 (289)
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Leaf architecture in relation to taxonomy: Ipomoea L.
Feddes Repertorium, 1990AbstractArchitectural features of the leaf in fourteen species of Ipomoea have been studied. The leaves are simple or palmately compound. The major veination pattern conforms either to pinnate brochidodromous or actinodromous type. The leaf shape, apex, base, number of areoles and vein endingy entering the areoles are species specific.
S. Shanmukha Raya Rao, M. Leela
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THE TERMINOLOGY OF LEAF ARCHITECTURE
TAXON, 1976SummaryA comparative study of leaf architecture throughout the Angiosperms has been made and six classes of venation patterns are recognised. The terms employed are defined and arranged in a systematic order for convenience of reference. Some new terms have been introduced where greater precision was needed and for little known venation patterns.
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Leaf architecture in relation to taxonomy: Meliaceae
Feddes Repertorium, 1992AbstractLeaf architectural features in nine genera and eleven species of the Meliaceae have been studied. The major venation pattern conforms to pinnate camptodromous either with eucamptodromous or brochidodromous and mixed craspedodromous types. The highest degree of vein order is up to 7°.
Vijayalakshmi Sarma +2 more
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Leaf-spine architecture for OTN switching
2017 International Conference on Computing, Networking and Communications (ICNC), 2017The application of a leaf-spine switching architecture is considered for Layer 1 circuit switching, such as with OTN ODU-based switching. Simple relationships are derived for the achievable leaf-spine switch capacity and scalability, given the number and capacity of individual leaf and spine switch elements, and bandwidth for leaf-spine interlinks ...
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Systematics and Leaf Architecture of the Gunneraceae
The Botanical Review, 2005I. Abstract Cladistic and phenetic analyses of leaf and other morphological characters of Gunnera strongly support monophyly of the genus, with the Saxifragaceae s.str. as the closest sister group. This morphologically based phylogeny provides a more coherent understanding of the evolutionary history of Gunnera than do recent phylogenetic hypotheses ...
Dorian Q. Fuller, Leo J. Hickey
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Leaf Architecture of Some Monocotyledons with Reticulate Venation
Annals of Botany, 1983Description de l'architecture des feuilles a nervures reticulees de 12 especes appartenant a 7 familles de ...
J. A. INAMDAR, K. N. SHENOY, N. V. RAO
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A modified terminology for angiosperm leaf architecture
Journal of the Royal Society of New Zealand, 1991Abstract A modified terminology for describing leaf architecture is presented, which incorporates lamina development and gives greater emphasis to the patterns formed by groups of venation elements than to their size. Leaf architecture is described using a hierarchy of venation “elements”, which are grouped into “patterns”, which are located in “zones”
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Architectural mutation and leaf form, for the palmate series
Journal of Theoretical Biology, 2005Palmate leaf form occurs in both the ferns and angiosperms. The palmate leaf form, and its variants, is present in distantly separated clades within both ferns and angiosperms. There tend not to be intermediate forms which link these palmate leaves to other leaf forms within the taxonomic groups in question. The recurrence of homoplasious leaf forms in
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Leaf architecture of Rhus s.str. (Anacardiaceae)
Feddes Repertorium, 2009AbstractA comprehensive leaf architecture study of 31 species of Rhus s.str. was conducted to describe and identify characters of potential value for assessing infrageneric relationships. The first detailed leaf descriptions for Rhus subgenera are provided and show that cleared leaves revealed craspedodromous, eucamptodromous, and cladodromous venation
A. R. Andrés‐Hernández +1 more
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