title: Ceramium nodulosum
text: # Ceramium nodulosum
  
  Ceramium nodulosum is a small red marine alga. There is confusion surrounding this name.
  
  ## Description
  
  Ceramium nodulosum is a small filamentous branching alga growing to a height of 30 cm in tufts of erect branches usually fully corticate. The apices of main axes are straight or slightly curled inward at the tips. It attached by a rhizoids with many erect branches. The axes and branches are usually fully corticate and, unlike some other species, it is without spines.
  
  ## Reproduction
  
  Gametophytes are dioecious. Cystocarpes and tetrasporasngia are formed on the branches.
  
  ## Distribution
  
  Generally found around Great Britain and Ireland.
  
  ## Nomenclature
  
  There is some confusion with this name. As described above the species is Ceramium nodulosum (Lightfoot) Ducluzeae. The species Ceramium virgatum Roth is noted as a possible synonym elsewhere.
  
  