208 CRYPTOGAMIA- FUNGI. 



The gooseberry is of the former class, the red and black 

 currants of the latter ; and I adduce these examples be- 

 cause the plants belong to one genus, and are cultivated in 

 the same soil and situations. vEcidia, on the whole, how- 

 ever, seem to prefer such plants as leaf and flower in 

 spring or early summer. They attack them while in 

 health and vigour ; and if the parasites sometimes distort the 

 lineaments and fair proportions of their supporters, they 

 yet more frequently invest them with ornament and addi- 

 tional interest. 



110. EKINEUM. 



1. JE. pyrinum, scattered, subeffused, rich reddish -brown ; fila- 

 ments compressed, linear, somewhat lax, with the apex club- 

 shaped, and often truncate. PURT. Mid. Fl. iii. 315. GREV. Fl. 

 Edin. 449. ; Crypt. Fl. t. 22. 



Hob. On the under surface of the leaves of the crab-tree, 

 very rare. I have twice met with it ; once in the im- 

 mediate vicinity of Berwick, and once near Mountfair, 

 Berwickshire. 



2. E. acerinum, distinct or confluent, pale bufl^ becoming red- 

 dish-brown ; filaments club-shaped, very rarely turbinate, flaccid, 

 the upper half often inclined GREV. Fl. Edin. 449. HOOK. 

 Scot. ii. 34. PURT. Mid. Fl. iii. 313. t. 36. 



JIab. On the leaves of the plane or sycamore, in circum- 

 scribed spots, or covering the whole under surface, com- 



3. E. fagineum, spots somewhat immersed, dense, at first white, 

 at length rich brown ; filaments clavate, turbinate. GREV. 

 Crypt. Fl. t. 250. f. 1. 



Hal. On the under surface of the leaves of the beech, in 

 spots often bounded by the nerves of the leaf. Black- 

 adder plantations. Woods at the Pease-bridge. 



4. E. betulinum, spots white, at last becoming of a dark brown, 

 often confluent ; filaments short, polymorphous, sometimes tur- 

 binate, but generally with 2 blunt horn-like patent summits. 

 GREV. Edin. Fl. 451. HOOK. Scot. ii. 34. 



Hab. On the leaves of the birch, frequent. 

 2 



