Noun: stonewort 'stown,wurt
- Any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits
"Stoneworts can be found in many freshwater habitats"
Derived forms: stoneworts
Type of: chlorophyte, green algae
Part of: Characeae, family Characeae
Encyclopedia: Stonewort