lAl.OMOM VTAC'KAK 19-5 



For a comparison between this species and C. Ravcnclii, see Atkinson's discussion, 

 which is rather long for quotation. The most important differences that seem to 

 distinguish the two species are the longer stalk (on the average), the smaller spores and 

 the vermilion color being confined to the inner faces of the stomal teeth in C. micro- 

 sporum. We have not seen Atkinson's plants and cannot give an opinion on the 

 validity of the species. 



Tennessee. Rugby. Percival, coll. (Cornell Univ. Herb., t>pe). 



