Microscopic characteristics of dicotyledonous wood

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Sizes of pores, Density of pores

 
  Uniform distribution of pores.

Section

r
radial
t tangential
q transversal

Diagnostic
Value

h
high
me medium
mo modest

 
 
  Large pores
(radial diameter of one pore 70-180 µm)
sparsely distributed (15-25 pores/mm2).
q h
  Medium-sized pores
(radial diameter of one pore: 50-100 µm).
q me
  Small pores
(radial diameter of one pore: 30-80 µm).
q me
  Very small pores
(radial diameter of one pore: 20-30 µm).
q h
  Tyloses:
An outgrowth of an adjacent parenchyma cell through the pit cavity in a vessel wall. The vessel lumen may be obstructed.
     
  Gum deposits. q/r me
  Tyloses with thin walls. q/r h

  © / authors / citation / 04.02.04

 

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