302 



Mycological Bulletin No. 74 



[Vol. V. 



from Florida. The slender, very dark colored stem and the colored 

 peridium distinguish it from all related species. 



GROUP 6. 



TYLOSTOMA AMERTCaNUM.— Penduim uncolored, pale, often 

 with several irregular, naked, protruding mouths. Stem obese, pale or 

 light colored, hollow, often striate", varying much in thickness and length, 

 from two to six inches long. Capillitium hyaline. Spores 5-6 mic, smooth. 



This plant was collected in great abundance in the vicinity of Denver, 

 Colo., by E. B. Sterling. In my opinion it is only an American form 

 (hence the name) of Tylostoma caespitosum of North Africa, although the 

 spores are not the same and it is a much more robust plant. 



SYNONYMS. — In my opinion Tylostoma Kansense is the same plant 

 plthough I do not use the' name, as Prof. Peck (to whom I sent specimens 

 of the Denver plant) strongly disagrees with me and Patouillard and 

 Bresadola have coincided with Prof. Peck. They form their opinions 

 from the darker color of the capillitium, which T readily agree is slightly 

 darker in Kansas specimens. The specimens Mr. Bartholomew sent mt 

 are old, wintered specimens ( and I think that explains not only the 

 darker capillitium but also the different moufh of T. Kansense as de- 

 scribed. 



[Continued in Next Number] 



Fig. 230. — 'rv-Los'-TO-MA poc-u-L.\'-TUM. (C. G. Lloyd). 

 (see next number) 



The Mycological Bulletin is issued Monthly, Price 25c. Copie>' oC Vol IT 1Q04', Vol. III. 

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