Algae Spirulina (Spirulina or Arthrospira) is the blue green algae (Blue - green alga or Cyanobacterium) genera. With a look. Cylindrical cells many tiles cells is a line straight or spiral coil or a band, no branches stems, called trichomes (trichome) by cell has a diameter approximately 1-12 micrometers. (m m), size, width, length, type of trichome with (Species) of algae and environmental conditions on algae growth.