Vlll 



Index. 



Potentilla tormentilla 

 Prunus communis 

 Pyrus aria 

 Quercus robur . 

 SLellaria holostea 



14 



14 



169 



16 



13 



Thlaspi arvense 

 Tilia europea 

 Trifolium repens 

 Veronica serpyllifolia 

 Vicia cracca 



168 



203 



H 

 170 

 169 



FAMILIES INCLUDED IN IN SECT A SCO TIC A. 



NEW SPECIES AND VARIETIES 

 Described in this volume. 



