140 CRYPTOGAMIA FUNGI. 



Sow. Fung. t. 317- S. complanata, MOUG. and NEST., No. 82. 

 Eustegia ilicis, Bot. Gall. ii. 717- 



Hob. On dead holly leaves. 



At first the spots are level with the surface of the leaf, but 

 the upper part separates, and they then become exca 

 vated. 



4. X. Geranii) spots small, black, roundish, even with the surface 

 or slightly raised, rough or granulated ; interior black GREV. 

 Fl. Edin. 368. 



Hob. On the leaves of the wood crane's-bill. 



5. X. populinum, spots small, thickened, clustered, roundish 

 or angular and subconfluent, reddish-brown, becoming black. 

 Bot. Gall. ii. 875. Sclerotium populneum, GREV. FL Edin. 463. 



flab. On decaying leaves of poplars, common. 

 Xyloma populinum of GREVILLE is a different plant. 



6. X. salicinum, spots thickened, scattered or clustered, round- 

 ish or angular, rugose, at first orange-coloured, becoming brown, 

 and ultimately dark brown. Bot. Gall. ii. 875. Sclerotium salici- 

 num, GREV. Fl. Edin. 462. 



Hob. On the leaves of Salix caprea, frequent. 



Very distinct from X. salignum, and more evidently a dis- 

 eased and thickened state of the leaf. 



7- X. Rosa, on branches, clustered, often confluent, compact, 

 orbiculate, convex, greyish-black, covered by the epidermis, which 

 is at last irregularly ruptured. Bot. Gall. ii. 876. 



Hob. On branches of the wild roses, the part affected 

 being swollen and uneven. 



8. X. Spirea, spots irregular, effused, black, nearly smooth, 

 slightly raised MOUG. and NEST., No. 760. Leptostroma Spirece, 

 Bot. Gall. ii. 726. 



Hob. Generally on the dead stalks of the meadow-sweet, 

 but my specimens are on one of the lesser umbellifera:. 



