92 Rev. M. J. Berkeley on the Fructification of the 



large utricles so conspicuous in most Coprini were here ex- 

 tremely few. The arrangement of the sporophores appears to 

 be by no means vague. Link figures the spaces between the 

 sori as square. This does not accord with my own observa- 

 tions. I find them triangular in Ag. striatus, Bull., five or six 

 being arranged around each sporophore, so that the sporo- 

 phores are arranged round a central one in pentagons or hex- 

 agons. In Ag. macro cephalus, Berk,, the sporophores are urn- 

 shaped and supported upon long peduncles. The cellular 

 layer beneath the hymenium is here exceedingly obscure, and 

 the central stratum very thin and consisting of filaments much 

 more slender in proportion than in Ag. micaceus. In that spe- 

 cies there are about three layers of subglobose cells between 

 the hymenium and the central stratum. In Ag. momentaneus 

 the sporophores are similar ; and the utricles large as in Ag. 

 macrocephalus. 



The quaternary arrangement of the spores has been recog- 

 nised from the time of Micheli, but no one appears to have 

 suspected how general it is in Agarics. It may, however, be 

 very readily seen with a good doublet, if a thin slice from the 

 surface of the gill be examined ; and a thin transverse section 

 will show them to be arranged on the spiculae of the sporophores 

 exactly as in the Coprini. 



Taking the tribes as they stand in Fries, I will mention the 

 species which I have had under observation, making occa- 

 sional notes where requisite. 



The quaternary arrangement then has been verified in 



Ag. phalloides, Fr. 



— vaginatus, Bull. 



— pantherimts, Dec. 



— rubescens, Fr. 



— muscarius, Linn. 



— procerus, Scop. 



— erubescens, Fr. 



— hypothejus, Fr. 



Ag. Columbetta, Fr. 



— emeticus, Schaeff. 



— fcetens, Pers. 



— volemum, Fr. 



— theiogalas, Bull. 



— rufus, Scop. 



— pyrogalus, Bull. 



— fuliginosus, Fr. 



— piperitus, Bolt. 



— luridus, Schaeff. 



In most, if not in all the Galorrhei, the spores are minutely 

 echinulate. In Ag. flexuosus, Fr. alone, the arrangement of 



