SOUTH WESTERN PARTS OF EUROPE. 35 



Tremella Nostoc^ mescnteriformis. 



Agaricus campestris (but less frequently in the 



South of Europe) arvensis, Bulliardi, procerus, 



porcellaneus. 

 Boletus igniarius, edulis, versicolor. 

 Helvella Mitra. 

 Peziza cochleata> hirta. 

 Phallus impudicus. 

 Spha?ria clavata, deusta, virescens, uda, corylea, 



acuta. 

 Stemonitis typhina, fusca. 

 Ulva intestinalis. 

 Conferva bullosa, amphibia, capillaris, glomerata.;, 



corallina, and most of the Fuci. 



From the above, the following conclusions may- 

 be drawn : 



1. Plants which grow in swamps and standing 



waters are the most general. The reason why 



they are less common in the south-west part of 



Europe in particular, is merely because swampy 



places are there less frequent. In the swamps in 



Portugal or the South of Spain, very few plants are 



found peculiar to the most southern parts of Europe, 

 c 2 



