Thus the coenenchyma forms a stem, sometimes branched, from the surface of which the free portions of the zooids project.
In the order Pseudaxonia the colonies are upright and branched, consisting of a number of short zooids whose proximal ends are imbedded in a coenenchyma containing numerous ramifying solenia and spicules.
The coenenchyma is further differentiated into a medullary portion and a cortex.
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