title: Juan Ismael Calzada
text: # Juan Ismael Calzada
  
  Juan Ismael Calzada is a Mexican botanist and collector. Dr Calzada is credited with the discovery of the elm Ulmus ismaelis, named in his honour.
  
  ## Partial works
  
  * El estropajo. Xalapa Instituto Nacional de Investigaciones sobre Recursos Bioticos. 1982. INIREB informa 52
  