North A))ierica>t Fiitigi. 15 



L. cniciatiDu, Rostk., but this species is said to grow on 

 trunks of pines, and hence must be something different. 



//. Cortex of /oiii^' sphics, curved and coiiz'cri^oit at the 

 apex, 'ivhich fall away and leave a smooth surface 

 to the iiDier peridiinii. 



17. L. PKDiCKLLATUM, Peek. Peridium globose or 

 broadly obovoid, with a slender fibrous mycelium. Cortex 

 gray or whitish, changing to dirty-brown, consisting of long 

 spines convergent at the apex ; the.se at length fall awa^-, 

 leaving a wrinkled or obscurel}' pitted surface to the pale 

 glabrous inner peridium. Subgleba rather small, occupying 

 scarcely more than a fourth part of the peridium ; mass of 

 spores and capillitium olivaceous, then brownish ; the threads 

 much branched, the main stem thicker than the spores, the 

 branches tapering; spores globose, even, 3.5-4.5 mic. in 

 diameter, with long persistent pedicels. Plate II, Fig. 2. 



Growing on the ground and on rotten wood in woods. 

 New York, Peck; Alabama, Atkinson; Ohio, Morgan; Wis- 

 consin, Trelease. Peridium ^-i/^ inches in diameter. The 

 long persistent pedicels to the spores are the marked feature 

 of this species ; they do not break off and fall away in time, 

 as in other species of Lycoperdon. 



18. L. PECKii, Morg. Peridium obovoid, with a slender 

 fibrous mycelium. Cortex whitish, ochraceous or brownish, 

 sometimes with a reddish tinge, composed of long spines, 

 usually curved and convergent at the apex ; these finally fall 

 away, leaving a pale, smooth surface to the inner peridium. 

 Subgleba scarcely a third part of the peridium ; mass of spores 

 and capillitium greenish-^^ellow, then brownish-olivaceous ; 

 the threads rather thinner than the spores, scarcely branched ; 

 spores globose, minutely warted, 4-5 mic. in diameter. 



Growing on the ground or on decaying wood in woods. 

 New York, Peck; New Jensey, Ellis; Alabama, Atkinson; 

 Ohio, Morgan. Peridium 1-I/2 inches in diameter. This is 

 L. echinatum of Peck's U. S. species of Lycoperdon. 



19. L. EXiMiUM, Morg. n. .sp. Peridium obovoid, with a 

 fibrous mycelium. Cortex white or brownish, composed of 

 long slender spines, often curved and convergent at the apex, 

 which at length fall away from above downward, leaving a 



