genus epiphyllum: small genus of tropical American (mainly Central America) cacti
caryophylloid dicot genus: genus of relatively early dicotyledonous plants including mostly flowers
atropine: a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides