32 



Mycologia 



a dozen collections, by setting the pilei on slides and measuring 

 the abundant spores which were deposited. The prevailing form 

 is exactly as Bresadola describes it in his plant, except that I 

 find the spores a little larger than his limit. They are frequently 

 9 /a long, but are always ovate and pointed in the typical spores. 

 There would seem, therefore, to be no valid reason, if the species 

 are only distinguished by the spores, to consider our species dis- 

 tinct from Omphalia xanthophylla. The question is, however, 

 whether we have two species in the United States or one. I have 

 had no opportunity to examine fresh material from Ohio to ascer- 

 tain whether the Ohio plant that Morgan found is different from 

 the North Carolina plant. The fact that a small per cent, of 

 spores are to be found in every deposit which are shorter and 

 which could be reconciled with Morgan's measurements, makes 

 me doubtful in regard to the distinction of the species. At all 

 events, our plant would seem to be certainly Bresadola's species, 

 and either the spore measurements given for O. strombodes 

 should be modified or Bresadola's species should be added to our 

 list of Omphalias. 



Omphalia integrella (Pers.) Quel, appears almost every sum- 

 mer at Asheville. It is too small for a good photograph, but is 

 so distinct that its identification is not difficult. As it occurs here, 

 its distinguishing marks are the narrow and rather thick gills. I 

 know of no other species which resembles it at all closely. I have 

 felt very certain of its identity. 



Omphalia gracillima Weinm. appears occasionally. In size and 

 appearance it resembles Peck's Marasmius albiceps. It is, how- 

 ever, amply distinct from it. I find it pure- white, with a delicate, 

 white stipe and the spores 6X3/*- Bresadola has seen and ap- 

 proved my specimens. PL 4, f. 2, shows its appearance as well 

 as can be expected in so minute a plant. 



Omphalia cuspidata Quel. I have found a few times. PI. 4, 

 f. 3, shows its appearance well. It is pure-white and very small. 

 Both the pileus and stipe are thicker than would be expected in 

 so minute a species and the pileus has a strong umbo. The gills 

 are narrow, distant, and usually forking. It is found in wet 

 places on old leaves, and can easily be overlooked on account of 



