coniferas parte 2
DESCRIPTION
descripcion microscopica de coniferasTRANSCRIPT
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Características Microscópicas
CONIFERASParte 2
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Escala 21-22 = 50µm
21.- Warty layer. Actinostrobus piramidalis, tangential section.
22.- Warty layer. Actinostrobus piramidalis, radial section.
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Escala 23-25 = 100µm.; 26 = 50µm.
23.- Helical thickeningssingle and widely spaced. Taxus baccata, radial section.
24.-Helical thickeningssingle and narrowlyspaced. Pseudotsugamenziesii.
25.- Helical thickeningsgrouped in pairs andwidely spaced. Torreyacalifornica, tangentialsection.
26.- Helical thickenings in ray tracheids. Pseudotsugajaponica, radial section.
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Escala 27 = 20µm ; 28 = 50 µm
27.- Tracheids also with a warty layer. Callitris preisii, radial section.
28.- Tracheids also with a warty layer. Callitris columellaris, tangential section.
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Escala 29-32= 1mm.
29 – 32.- Axial parenchyma present, cross section.
29.-Arrangement diffuse. Taxodium distichum.
30.- Arrangement tangentiallyzonate. Cryptomeria japonica.
31.- Arrangement tangentiallyzonate in latewood at thegrowth ring boundary, seearrows. Sequoiasempervirens.
32.- Arrangement diffuse andtangentially zonate. Taxodiumdistichum.
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Escala 33,35 = 100µm.; 34,36 = 50µm.
33 – 36.- Transverse end walls of axial parenchyma cells, tangential sections.
33.- End walls smooth. Podocarpus elongatus.
34.- End walls irregularlythickened. Cryptomeriajaponica.
35 y 36.- End walls beadedor nodular. Taxodiumdistichum.
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Escala 37-38 = 50µm
37 y 38.- Ray composition, radial sections.
37.- Ray with three rows of ray tracheids along upper part of ray. Picea abies.
38.- Ray tracheids absent. Taxodium distichum.
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