Inner bark (phloem) 

                                                                                                                                                                                                                   A close up of a maple.

Transverse section


The correct name is phellem or outer bark.  From the outside in.  Outer bark. Then inward comes the Phloem (white arrow - wide band of dark orange color).  Then to the inner side end of the phloem is the cambial zone.

Note:  The Cambium Zone arrow points exactly at the Zone.









Source SHIGO 2002 CD's

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