6 Cincinnati Society of Natural History. 



woven hyphae which compose the wall of the peridiuni ; but 

 they seem to me generally branches of the latter and hence 

 fixed at one extremity and free at the other. Possibly free 

 threads are to be found, at least in some of the species, among 

 those which proceed from the subgleba ; but if so, they are 

 generally too long and involved to be easily segregated. 



TABLE OF SPECIES OF LYCOPERDON. 



Si. Purplk - Spored Sp:rik.s. Mature spores purplish 

 brown. 



a. Cortex consisting of very long convergent spines 



I, 2. 



b. Cortex composed of long slender convergent spines 



3> 4- 



c. Cortex composed of minute spinules 5, 6, 7. 



d. Cortex a furfuraceous persistent coat 8, 9, 10. 



e. Cortex a smooth continuous layer, becoming areo- 



late 11,12. 



S2. Olive-Spored Series. Mature spores usually brown- 

 ish-olivaceous. 



A. Peridium obovoid or turbinate, the subgleba well 



developed. 



f. Cortex of long spines mingled with shorter ones, the 

 former at length fall away, leaving a reticulate surface to the 

 inner peridium 13, 14. 



g. Cortex of stout spines which fall away and leave a 

 tomentose or furfuraceous surface to the inner peridium 15, 16. 



//. Cortex of long spines, curved and convergent at the 

 apex, which fall away and leave a smooth surface to the inner 

 peridium 17, iS, 19, 20. 



i. Cortex of minute spinules and granules or furfuraceous 

 .scales. Terrestrial. 21, 22, 23. 



/•. Cortex of minute spinules, scales or granules. Ligna- 

 tile 24, 25. 



B. Peridium \er)- small, s^loljose, the sul)gieba iiearl\- 



obsolete. 

 /. Cortex a lliin coat of minute s])inules, scales or granules 

 26-3 1 . 



