3-[2-amino-2-imidazolin-4 (5)-yl] alanine (enduracididine) and 2-[2-amino-2-imidazolin-4 (5)-yl] acetic acid in seeds of Lonchocarpus sericeus 

 -  PhytoChemistry, 16, p.1957-1959, 1977 .