fungí argentini 



AUCTORE 



CAROLO SPEGAZZÍNI 



(Italus) 



JPugillus secundixs 



E Fr. 



Agaricus (Lepiota) Bonaerensis Speg. (n. sp.). 



Diag. Solitarius ; pileus primo emisphaerico-sulbglolbosus, dein 

 pyriformis, postremo subexplanatus, centro iimbonato (5-9 cent, 

 diam.) ; cutis volvacea pileiima cum umbone sordide fuscescens, 

 in squamas crassas secedens; squamae majores centrum versus, 

 ad marginem parvnlae quandoque deficientes; superficies pilei 

 (sub cute), candida, levissima, margine vix striatula ; caro lenta e 

 stipite discreta, in hymeniophorum descendens (5-8 mili, crass,); 



. Inmellae coufertiusculae, crassiusculae, trimacriae, albo-ceraceae, 

 sub-cartilagineo-tenacellae (5 mili, lat.), ápice obtuso rotundatae, 

 deorsum acutissime desinentes, a stipite distantes ; stipes fa- 

 cillime a pileo secedens, cylindraceus (8-10 cent. long. ^¡^-\ 

 cent, crass.), albus vel subfuscescens, levis vel squamis fusce- 

 scentibus ornatus, fibroso-cartilagineus, tenax, sursum subglo- 

 bose capitatus in pileum intrans, deorsum in bulbo incrassatus, 

 fistulosus velfibris gossipino-sericeislaxissimis repletus; anulus 

 mobilis, cartilagineo-tenacis, albus ; bulbus fibris lanosulis cau- 

 didissimis vestitus ; sporidia elliptica vel ovoidea, hyalina, pro- 

 toplasmate granuloso repleta (12-16 X 8-9). 



Species Ag. procero affinis, sed tenacitate (fere Marasmiacea), 

 et caeteris cbaracteribus citatis satis distincta. 



Eah. In herbosis ad viarum marginem en San José de Flores, 

 April. 1880. 



