蓝藻是一类进化历史悠久、革兰氏阴性、无鞭毛、含叶绿素a、不形成叶绿体、能进行产氧性光合作用的原核生物。
Cyanobacteria is a kind of prokaryote with a long history of evolution , Gram-negative , non-flagellar , including chlorophyll a , no chloroplast , it can photosynthesis with the production of oxygen .