Bacillariophyceae

class of algae Bacillariophyceae (Bacillariophyceae) is a class of organisms united by key anatomical and physiological traits. It contains 33 orders with 956 known species. Key order groups include Achnanthales, Ardissoneales, Asterolamprales, Aulacoseirales, Bacillariales, and Biddulphiales. Among its members, 1 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Ochrophyta (Ochrophyta).