Microscopic characteristics of coniferous wood
more microscopic characteristics ...
Coniferous wood
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Resin canals
Pitting in rays
Structure of tracheid walls an xylem rays
Dicotyledonous wood
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Vessels (Pores)
Sizes of pores, density of pores
Vessels and fibers in longitudinal section
Rays in tangential section
Rays in radial section
Parenchyma
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Resin canals
Intercellular canals containing resin.
Resin canals are axially and radially oriented.
Section
r
radial
t
tangential
q
transversal
Diagnostic
Value
h
high
me
medium
mo
modest
Resin canals with thin-walled epithelial cells.
q/t
h
Resin canals with thick-walled epithelial cells.
q/t
h
Resin canal in longitudinal section.
r
mo
Sharp transition from earlywood to latewood.
q
me
Continous transition from earlywood to latewood.
q
mo
Traumatic resin canals
(produced by injury).
q
mo
Traumatic parenchyma cells may be present in all coniferous woods.
q
mo
Parenchyma cells with colored contents.
q/t
h
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citation
/ 12.05.04
