VOL. Ll. | Polyporotd Fungt. : 95 
with pores just as large and just as angular, are to remain in Poly- 
porus. We suspect that the same is true of Hexagonia, but we 
have seen too few species of that genus to form a definite conclu- 
sion. 
(d) Mucronoporus, with spines within the pores, stands on 
about as valid ground as would a genus established on Polyporus 
hydnoides and characterized by the bristly hairs which thickly cover 
its pileus. Were the systematists among the flowering plants to 
‘divide every genus that possessed both glabrous and pubescent 
‘species, there would be even more hair-pulling in their ranks than 
has yet appeared. 
(e) The subdivision of Polyporus on the basis of the color of 
the cortex and spores, as proposed by some continental botanists’, 
is no more rational than to divide Viola into three genera to contain 
the blue, yellow and white flowered species respectively. 
(f) No more rational is the sub-division of the same genus into 
Fomes, Polystictus and Poria. This seems to have been attempted 
‘by Fries’ as a sort of experiment, but was not continued by him in 
his Opus Maximus,’ nor other later writings. M. C. Cooke resur- 
rected this classification in his Praecursores,‘ and he was almost im- 
mediately followed by Saccardo®. A few American mycoloygists> 
who do not seem to appreciate that Saccardo’s Sylloge is a con- 
venient compilation rather than a critical conspectus, have also 
adopted it bodily. 
4. Dedalea will probably have to be united with Lenzites, but 
whether this united group will be agaric with polyporoid affinities, 
or polypore with agaricoid affinities, it would be hard to decide with 
the light thrown upon the genus by American species. 
5. The genera about which there is no present suspicion are, 
so far as our flora is concerned, Polyporus, Boletus, Fistulina, Sole- 
nia, Merulius and perhaps Strobilomyces. Porothelium and Cyclo- 
myces are not sufficiently known to us to permit a judgment. 
AGE. Schroeter foc: riz. 
? Nove Symbol Mycologicze, 1851. 
3 Hymenomycetes Europe, 1874. 
*Praecursores ad Monogragraphia Polyporovum, Grevillea, xiii, 80-87, 114-119; 
xiv, 17-21, 77-87, 109-115; xv, 19-27, 50-60 (1885-6). 
5 Sylloge Fungorum, vi. 
