The Identification of the Seeds of the British Papaveraceae

The morphology of seeds of British wild, introduced, and commonlycultivated members of the Papaveraceae has been examined, anda key to the identification of the seeds is presented. Quantitative data on size and weight as well as informationabout shape, colour and surface features of the seeds are givenfor Papaver rhoeas L., P. dubium L., P. lecoqii lamotte, P.hybridum L., P. argemone L., P. somniferum L., P. lateritiumC. Koch, P. atlanticum (Ball) Coss., P. orientale L., P. nudicauleL., Meconopsis cambrica (L.) Vig., M. betonicifolia French,Roemeria hybrida (L.) DC., Glaucium flavum Crantz., G. corniculatum(L.) Rudolph, Chelidonium majus L., Eschscholzia californicaCham., E. erecta cv. compacta and E. erecta cv. miniature. Arepresentative sample of each seed is illustrated.