Removal of vessel end wall with middle part consisting of primary wall material.
vessel, end wall, primary wall, wall margin, secondary wall, hydrolyzed
BSA Plant Images Online - Removal of vessel end wall with middle part consisting of primary wall material
Removal of vessel end wall with middle part consisting of primary wall material. Around the end wall margin, secondary wall material protects unthickened primary wall, which becomes hydrolyzed and disappear. This stage is shown below: the rim now surrounds a perforation. (Phaseolus vulgaris stem)
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