Mycological Bulletin 



No. 74 



JV. A. Kellerman, Ph. D., Ohio State University 



Columbus, February, 1907. 



LIBRARY 

 NEW YORK 

 ROTANICAL 



<■ RDEN. 



A TYLOSTOMA NUMBER. 



The interesting Puffballs belonging- to the genus Ty-los'-to-ma 

 have been thoroughly treated by eminent authority, namely, C. G. 

 Lloyd in Mycological Notes, and we give our readers the benefit 

 of his study, which has extended over several years. He has 

 kindly furnished the cuts as well, and we devote this entire No. 

 to the subject. 



QUOTATIONS AND ILLUSTRATIONS FROM MYCOLOGICAL 

 NOTES, RELATING TO TRT^ SPFCtfS OF TYLOSTOMA. 



By C. G. Lloyd. 



TYLCSTOMEAE. 



Tbe TyloFtomeje embr^re nil G?stromycetes with dry spores, having 

 peridia borne on distinct stalks that are not prolonged as axes. 



THE GENUS TYLOSTOMA. 



This is the largest genus and the smallest individuals that belong to 

 ''ie tribe Tyloston^'^s. It is spread over the earth's surface and every 

 ^ocalit}' has proli^lily one or more snecies. The genus is more common 

 in sandy countries. All species with the exception of two or three 

 grow in the ground. Tylostoma cxaspcratum (and perhaps a couple of 

 others that are little krown") always grows on branches or loes. 



The genus can be thus described. Exoperidium of the nature of a 

 cortex, separatinp* more or less from the upper part of the mature plant, 

 but usuallv remaining more or less persistent at the base of the peridium. 

 Endoneridium opening by a definite mouth (in a few species by several 

 mouths). There is a depression or "socket" at the base of the peridium 

 into which the stine is inserted. Gl'^ba of branched, septate, capilHtium 

 mixed with the snores. Stipe distinct from the peridium and inserted into 

 a "socket" at its b;;^e. 



5:^ THE SPECIES OF TYLOSTOMA. 



CD 



Cr> For convenience in classification we have divided the Tylostomas into 

 groups according to the most promirent characters as follows: 



OQ 



