Toxicological Trivia  From September 14, 2009:  the common following  plants, like plum pits, apricot, peach, bitter almond, bitter cassava, cherry laurel and linseed,   have this toxic element:
a) cyanogenetic glycosides;
b) Urushiol;
c) Grayanotoxin.

Answer a. Read more in Spanish  "cyanide"