Mandarin trees began in China and Indo China now it popularity has created harvests in Southern Europe, Africa, and Australia.  its benefits are: antispasmodic, carminative, cholagogue, depurative, digestive, diuretic and sedative.  This is a good oil for children for tummy upsets and effective for hyperactive children.  Use in diffuser along with other citrus and lavender.   Add to a stretch mark blend along with Lavender, Neroli and Hazelnut oil if tolerated or wheatgerm if not. Again, for pregnancy use after 1st trimester and dilute to 1 %.  This one is from Italy and I use it in Calming Peace and Nite Angel,