Valonia n. : The acorn cup of two kinds of oak (Quercus macrolepis, and Q. vallonea) found in Eastern Europe. It contains abundance of tannin, and is much used by tanners and dyers.

Valonia n. : A genus of marine green algae, in which the whole frond consists of a single oval or cylindrical cell, often an inch in length.

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Taxonomy
Valonia, free encyclopedia, genus, Scientific databases, Kingdom, Phylum, Family, NCBI taxonomy, 2007-03-19, Personal tools, Interaction, Toolbox, non-profit organization, Ulvophyceae, taxonomy, Search Tree, Valoniaceae, algae.

Defination from the web:
Valonia. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. ftp://ftp.ncbi.nih.gov/pub/taxonomy ... for Valonia. Search Tree of Life taxonomy pages for Valonia. Search Species2000 page for Valonia. AlgaeBase ...