Structural Patterns of Tropical Barks, Volume 9, Issue 3
Although there exists an enormous bibliography on wood anatomy, detailed studies of bark structure and especially of tropical barks, are very scarce and only deal with certain genera and species. Very little is known about the general bark structure in tropical trees, whether it is relatively uniform or diversified, and if it is subject to environmental factors; nothing is known of growth increments in tropical barks. Little is known of the bark structure of certain families and a comparison of bark structure from the taxonomic point of view is missing completely. It is unknown, whether bark structure may be used for identification in the field. Even the chemical composition of tropical barks is only little studied. All the illustrations included, drawings as well as photographs, are originals.
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On the origin of vulgar and some Latin plant names
Criteria of bark characterization
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aerenchyma alternating plates alternating with layers Annonaceae arranged bark structure Bombacaceae Burseraceae Caesalpiniaceae cavities characteristic composed conspicuous cork cork cells cork layer crystal cells develop dilatation growth dilated rays druses elongated enlarged entire bark width Euphorbiaceae families fiber plates fibers and sclereids fissured formation of stone growth rings growth zone guianensis hard bast groups hard bast plates HOLDHEIDE irregular laticifers Lauraceae Lecythidaceae lenticels middle bark Mimosaceae Moraceae observed occur Papilionaceae parenchyma parenchyma cells pattern periderm periderm layers phelloderm phellogen phloem parenchyma prickles Pseudobombax radial rows regular rhytidome ROTH in press roundish sample Sapotaceae scales scaly sclereids sclerenchyma secondary formation secondary phloem secretory canals secretory cells septate crystal strands seriate sheath parenchyma sieve elements sieve tubes slime cells solitary rhomboid species studied Sterculiaceae stratified cork superposed plates tangential bands tangential rows thick thickened walls Tiliaceae tissue transverse section tropical trees U-shaped wall thickenings U-thickenings uniseriate xylem