Lavender, jasmine and violet have a flowery note. The scents of mint, lemon balm, thyme and basil are rather dry and fresh. Basically, it's either the flowers which exude the smell - or the leaves free their fragrance when touched. Sometimes, of course, bark and roots have a very distinct smell too, their smell being carried mostly by resinous, oily substances.
Lavender, jasmine and violet have a flowery note. The scents of mint, lemon balm, thyme and basil are rather dry and fresh. Basically, it's either the flowers which exude the smell - or the leaves free their fragrance when touched. Sometimes, of course, bark and roots have a very distinct smell too, their smell being carried mostly by resinous, oily substances.