 ), some authors prefer to use the term mesoglea (in wider sense) in lieu of mesenchyme when referring to the middle layers of sponges and diploblasts, reserving the term mesenchyme for the embryological sense.However, Brusca & Brusca discourage this usage, using mesoglea in its strict sense (noncellular mesenchyme), and preferring to maintain both the embryological and zoological senses for the term mesenchyme.Finally, some similar terms used in botany generally are differentiated by the suffix "a"