Características Microscópicas

CONIFERASParte 2

Escala 21-22 = 50µm

21.- Warty layer. Actinostrobus piramidalis, tangential section.

22.- Warty layer. Actinostrobus piramidalis, radial section.

60 60

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.

65

68

65

67

66

6869

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.

60

71

71

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.

73 74

74

75

73

74

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.

76 77

78 78

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.

79 80