Search in gallery Blue algae - Large (73 Kb) - Scroll down   to information With labels Legend: 1  filamentous thallus structure 2  heterocyst   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/PL0027/print/