Stonewort

n.

1.

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

Noun

1.

stonewort - any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits

Characeae, chlorophyte, family Characeae, green algae