distinguish them. The late Dr. Roemer, in the Systema 

 Vegetabilium, says the flowers are usually yellowish white, 

 very rarely blue, and questions whether the latter may not 

 be a distinct species, being of much humbler growth. 

 This author enumerates several varieties, differing chiefly 

 in the form of the leaves and colour of the flowers. 



A hardy perennial. Native of the middle parts of Europe. 

 Flowers in June and July. Communicated by Mr. Jenkins 

 from his Botanical garden in the New -Road. 



The outline figures represent, a radical leaf; a. a flower 

 magnified; b. a stamen magnified. 



