Stonewort

[stәunwә:t]

Definition

(noun.) any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits.

Checked by Amy--From WordNet

Definition

(n.) Any plant of the genus Chara; -- so called because they are often incrusted with carbonate of lime. See Chara.

Typed by Doreen