MASS MUTATIONS AND TWIN HYBRIDS OF O. 

 GRANDIFLORA AIT. 



Fig 6 O. grandiflora X O. Lamarckiana tnut. nanella: flowering spikes (deprived 



of flowers just open), showing characteristic position of flower buds; to left, 



O. hybr. /urea; to right, O. hybr. orafa 



