MYCOLOGIA 



Vol. XIV SEPTEMBER, 1922 No. 5 



STUDIES IN TROPICAL ASCOMYCETES— I 



NEOPECKIA DIFFUSA AND HERPOTRICHIA 

 ALBIDOSTOMA 



Fred J. Seaver 

 (With Plate 19) 



Through our own collections and the contributions or exchanges 

 of others, an increasing amount of tropical material is continually 

 coming to hand and it is the intention of the writer to publish from 

 time to time notes on the more interesting species under the above 

 general title. It is not the intention to restrict these notes to those 

 species which are found in the tropics only but to include any 

 forms which are of especial interest even though they may be 

 cosmopolitan in their distribution as are the two which make up 

 the subtitle of the present paper. These although frequently col- 

 lected in the tropics were not originally described from tropical 

 material, neither are they confined thereto, but have a very wide 

 range of distribution. 



On several occasions the attention of the writer has been called 

 to the confusion which has resulted from the external similarity 

 of the two above-named species while internally they are so dif- 

 ferent that they have been placed in different genera. As to the 

 merits of the generic separation, the reader may judge for himself, 

 the present paper being an attempt to emphasize the specific differ- 

 ences of the two species and to note some of the apparent syn- 

 onyms and the wide range of distribution of the plants. 



Several years ago the writer took the time to make microscopic 

 examination of the spores of all of the specimens in the collection 



[Mycologia for July (14: 173-234) was issued July 29, 1922] 



235 



