452 



OROBANCHACE.E. BROtfM-RAPE TRIBE. 



on Centaurea scabiosa : and 0. rubra, abundant on 

 basaltic rock in Scotland and the north of Ireland, and 

 on magnesian rock at the Lizard Point, Cornwall. This 

 species appears to be parasitical on the roots of Wild 

 Thyme. 



THR^A SQUAMA RIA (Toothivorl), 



