Xanthidium

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Xanthidium \Xan*thid"i*um\, n.; pl. {Xanthidia}. [NL., fr. Gr.
     xanqo`s yellow.] (Bot.)
     A genus of minute unicellular algae of the desmids. These
     algae have a rounded shape and are armed with glochidiate or
     branched aculei. Several species occur in ditches, and others
     are found fossil in flint or hornstone.


     [1913 Webster]