304 



Mycological Bulletin No. 75 



[Vol, V. 



Fig. 231. — Ty-los'-to-ma tu-ber-cu-la'-tum. (C. G. Lloyd). 



FORMS OF TYLOSTOMA POCULATUM. 



TYLOSTOMA TUBERCULATUM.— We find specimens agreeing with 

 Tylostoma poculatum in general characters, and so close to it they can 

 not be distinguished except by the microscope, that differ in having spores 

 not smooth but granular. For us it is a form but for those who give 

 their species no latitude as to spore variation it is a strong species. We are 

 not sure it is Miss Whites plant, as we would describe the spores as 

 "granular" instead of with "occasional tuber-iikt warts,' but we prefer 

 to use her name rather than to propose a new one 



I"ig. 232. — Ty-i.os'-to-ma sub-fus'-cum. (C. G. Lloyd). 



TYLOSTOMA SUP.FUSCUM.— The usual color of Tylostoma pocu- 

 latum is pale tan but sometimes cnnections are dark chocolate brown. 

 Sometimes I)oth colors occur in same collection and T liavc noted all 

 shades of connecting colors. The extreme color form, however, is very 

 marked. Spores are granular in all we have examined. 



