Colacium References Colacium algae genus Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: algae/ Annotated classification…approximately 1,000 described species; includes Colacium, Euglena, Eutreptiella, and Phacus. Read More…approximately 1,000 described species; includes Colacium, Euglena, Eutreptiella, and Phacus. Read More