Search in gallery Blue algae - Large (121 Kb) - Scroll down   to information Without labels Legend: 1  heterocyst 3  colony 2  filament   English name: Scientific name: Nostoc sp. Familia: Nostocaceae Classis: Cyanophycea Phylum: Cyanophyta Regnum: Bacteria Blue algae

http://www.vcbio.science.ru.nl/en/image-gallery/show/labels/PL0028/print/