A freshwater plant with whorls of slender leaves, related to green algae. Many kinds become encrusted with chalky deposits, giving them a stony feel.
- ‘Evidence for this is provided by stoneworts, highly specialised and complex algae that are often called the ‘coal-mine canaries of the plant world’.’
- ‘Spirogyra, stoneworts, and desmids are all members of this fresh-water group of ‘green algae’.’
- ‘The Charales, commonly known as stoneworts or brittleworts, flourish in fresh and brackish water habitats throughout the world.’
- ‘This is Chara, commonly called muskgrass or stonewort.’