1) Class 2) Class charophyceae 
Charophyceae is a class (biology) of charophyte green algae. Some botanists include Charophyceae and chlorophyte green algae in the plant kingdom Charophyceae are a class within either the divisions Chlorophyta, Streptophytina, or Streptophyta. Current consensus treats Charophyceae as a class under division Charophyta, with Chlorophyta remaining a...
class of algae, certain members of which are commonly known as stoneworts and desmids. stonewort; desmid.[1 related articles]
[n] - in some classifications: contains only the order Charales
class Charophyceae noun in some classifications: contains only the order Charales