Colorful 24 in. x 36 in. poster shows nine algae divisions:
1. Cyanobacteria
2. Chlorophyta
3. Euglenophyta
4. Dinophyta
5. Cryptophyta
6. Bacillariophyta
7. Chrysophyta
8. Xanthophyta and Phaeophyta
9. Rhodophyta
Great for offices, classrooms, and labs. Free with purchase of AWWA Manual M57, Algae: Source to Treatment (no. 30057).