From Boericke's materia medica:

(Peach Tree) A most valuable remedy in vomiting of various kinds; MORNING SICKNESS. Irritation of eyes. Ischuria and hematuria. Haemorrhage from the bladder. Gastric irritation of children; no form of food tolerated. Loss of smell and taste. Gastric and intestinal irritation when the tongue is elongated and pointed, tip and edges red. Constant nausea and vomiting. 

Relationship
Compare: AMYGD. AMARA-Bitter Almond. (Pains through tonsils, throat dark, difficult swallowing, vomiting, cough with sore chest.)