A tube-like series of water-conducting cells (with bordered pits)
which are axially joined by perforation plates in the cell end walls.
The vessels in cross-sections are called pores.
r radial t tangential q transversal
h high me medium mo modest
The diameter of the pores in the earlywood is much greater than the
diameter of the pores in the latewood.
The pores in the earlywood are more numerous and distinctly larger
than those in the latewood. The semi-ring porous state may be induced
by water-deficiency; thus this anatomic characteristic is of little
value for diagnostic purposes.
The pores of the earlywood and latewood are approximately the same
Pores which in general are not in contact with other pores.
Radial pore files:
Several pores joined in radial groups, the number of pores in a group
varying according to the species.
Three or more pores irregularly grouped.