PLATE 114 



SPINY WALLED POLLEN GRAINS 



1. Anthemis (Anthemis nobilis, L.). 



2. Arnica (Arnica montana, L.). 



3. Calendula (Calendula officinalis, L.). 



4. Cassia flowers. 



5. American saffron (Carthamus tinctorius, L.). 



6. Blue malva flowers (Malva sylvestris, L.). 



