A number of photoperiodic pea plants (Pisum sativum L.), which remained vegetative under a short photoperiod, formed rudimentary carpels on leaf tissue. Laminar tissue became folded upward and fused to form the adaxial suture. Styles and stigmas of the rudimentary carpels closely resembled the same structures of normal carpels. The finding is believed to support the classical interpretation: that the carpel is a modified lea
