Stonewort
Charales is an order of freshwater green algae in the division Charophyta, class Charophyceae, commonly known as stoneworts. Depending on the treatment of the genus Nitellopsis, living (extant) species are placed into either one family (Characeae) or two. Further families are used for fossil members of the order. Linnaeus established the genus Chara in 1753.
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Research Mentions
Ancient pond alga already had a plant stress-signaling toolkit
The scraggly green stonewort in a pond edge or aquarium carries the same phosphorus-handling sign...