#auxin  a plant hormone that promotes root formation and bud growth
  supertype:  #phytohormone__plant_hormone__planthormone__growth_regulator  a hormone-like plant product
  subtype:  #indoleacetic_acid__IAA  a plant hormone promoting elongation of stems and roots
  subtype:  #indolebutyric_acid__indolebutyricacid  a synthetic plant hormone promoting elongation of stems and roots

No statement uses or specializes #auxin; click here to add one.