84 Trans. Acad, Sci. of St. Louis. 



him by placing the letter P. immediately before my record 

 numbers. 



I desire here also to express the obligations I am under, 

 for kindly assistance rendered, by Professors Macbride, 

 Underwood, Murrell, and Lloyd, whose names appear, in 

 each case, before my record numbers in a manner similar to 

 that of Prof. Peck. I am indebted to our own Dr. Trelease, 

 for kindly advice in the preparation of this paper for the 

 printer. It is remarkable that quite a large number of my 

 list are rare, consisting of only a few specimens, or found 

 but once. For example, Marasmius Wynnei, only two 

 specimens. Collyhia myriadophylla, on one rotten trunk 

 only, producing it three successive years. It seems strange 

 not to have found Marasmius oreades or Russula emeiica^ or 

 Amanita muscaria. Cortinarius was quite rare, until 1905. 

 Facts of this kind are surely very curious. 



Though some of the edible species are quite abundant, yet 

 very few of our people collect and eat them, owing to fear of 

 being poisoned. Two kinds only are known to a considerable 

 number of people as being wholesome, viz., theCampester, and 

 Morel. Besides these, Lepiota naucinoides, and the Shaggy 

 Coprinus, are also known to a few. The season for fleshy 

 mushrooms opens here about the second week of April, last- 

 ing until Fall frosts. This year (1905), however, produced 

 several species as early as March 26th. Most of the species 

 marked *' Edible " have been tested by myself. Many be- 

 sides, not marked, are edible. 



I venture some remarks regarding spore measurements. 

 Those given in this paper are my own, five excepted, without 

 reference to recorded ones. As is well known, spore measure- 

 ments vary considerably in many cases, often markedly, by 

 different authors. This may be accounted for in part by 

 variation of instruments, in part by carelessness, by examina- 

 tion dry or wet, but chiefly, I think, by variation of the 

 spores of different specimens of the same species ; for, while 

 in some species the spores measure quite equably, in others 

 the extremes are widely apart ; so that unless the extremes be 

 observed, the selection of intermediates necessarily varies 



