Tenarea tessellatum (Lemoine) Littler, comb. nov., an unusual crustose coralline (Rhodophyceae, Cryptonemiales) from Hawaii

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Abstract
New information concerning the development of Tenarea tessellatum, an unusual member of the crustose Corallinaceae, is presented. The morphological features that distinguish it from other species of Tenarea are: spiral manner of growth and the regular manner in which younger parts of the thalli grow over older parts; secondary pit connections that occur either singly or paired in localized regions connecting palisade cells in three directions; and the development of conceptacles several thallus layers beneath the surface, and the subsequent sloughing of the upper layers. Cell divisions occur only in planes parallel to the palisade cell long axes except during the formation of cover cells and conceptacles.

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