Rosmarinus officinalis , rosemary, and Salvia officinalis , sage oil, also have several chemotypes associated with them. As with the thyme oils, each of these will have a specific therapeutic picture depending on the principal component. The chemotypes of rosemary are cineole, camphor and verbenone, with cineole regarded as the safest and verbenone the chemotype that is contra-indicated in pregnancy and with children. Despite the similarity in common names, the recognized Latin names are from different genera. Roman chamomile is known as Anthemis nobilis and Chamaemelum nobile.
German chamomile is known as Matricaria recutita or Matricaria chamomilla.
Moroccan chamomile can be known as Ormenis multicaulis, Ormenis mixta or Anthemis mixta. In this case, it may be less confusing to call the oils by their common names. The chemical constituents of these oils vary and the oils also differ therapeutically, though to an extent there are similarities with all three oils. Orange oils Latin names are particularly important when describing essential oils from the bitter orange and sweet orange trees. The Latin name of the sweet orange tree, also known as orange portugal, is Citrus aurantium var.