Notice of Fries’ Systema Mycologicum. 237 
ters, which — serve for a description of its natural class, or- 
er or gene 
There Sting four leading characters, of course the system 
has four classes ; the names of which are, Coniomycetes, Hy- 
phomycetes, Gasteromycetes, and Hymenomycetes, signified 
by the letters C, M, U, and H. — class © has a 
aked, M, thallus Scxoees U, aclosed fungus ; and 
open fungus. Each class is ‘jivided into four orders, and sd 
order into four genera, arising like the classes from the actions 
of the natnral causes. The orders are designated by the letters 
» M, and H, and are the same in every class, CE de- 
notes first class, first order, and UU third class, re order. 
f an order is divided into two suborders, as tbe: fourth order 
of the fourth class, it is expressed thus, HH’ for the first sub- 
order, and HH* for the second. The genera are represent- 
ed by either of these letters, E, M, G, X, or U, according 
to its habitat. E denotes that it grows on decaying plants, : 
or on those recently dead, M that it grows on plants in the 
process of fermentation, G that it grows on the ground. The 
Petes suborder, of the fourth class, fourth order, stands as 
follow 
Genera. Formule, 
1. Thelephora "ai 
Hydnum “ce 
3. Polyporus ‘ee 
4. Agaricus rae 
In the artificial system the orders and genera are not limit- 
ed to four—they are regarded as natural families, having 
many allied genera. Agaricus has three allied genera, Con- 
thurellus, Meru Schizophy 
lius, m. 
Our author’s artificial system is only an exte of the 
natural system. He would do the same with phenog amous 
plants, demolishing the present natural system, and substitute 
in its place a a natural system which would supersede the ne- 
cessity of the present artificial system. is point, t; bows 
respecting it. The work is written in gee deal Lat 
Se Ge EAE in eee coined words which has rendered the de 
cy Peps = diffi 
Westfield, pets 30, 1827, 
