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Webster 1913 Edition
Xanthidium
‖
Xan-thid′i-um
,Noun.
pl.
Xanthidia
. [NL., fr. Gr.
ξανθόσ
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.