80 
PRAECURSORES AD MONOGRAPHIA POLYPORORUM. 
By M. C. Cookb. 
We have often been solicited to undertake a revision of the 
genus Polyporus of Fries, with critical notes. For two years we 
have cherished the hope of seeing this accomplished, and done 
something to facilitate it, but so many other, and pressing, claims 
upon our attention have from time to time postponed the attempt. 
At length we have resolved upon issuing our preliminary lists, 
imperfect though they may be, in order to indicate the arrange- 
ment we have decided to adopt. It will be seen that the method 
is based upon the suggestions of Fries in his “ Novae Symboke ” 
(1851), with a few unimportant modifications. 
Our present intention is to publish, in a collected form, all the 
scattered descriptions of the species known, with measurements of 
the pores, &c., and such critical notes as we can furnish, of the 
species described by Fries, Berkeley, Leveille, Montagne, our- 
selves, and others, as derived from authentic specimens. Mean- 
while the preliminary lists may be of service, although they must 
not be accepted as absolute, either as to the sequence of species or 
the specific value of every name. As we are anxious to examine 
for ourselves every species possible, progress is necessarily slow. 
We desire, above all things, to make the work practically useful, 
therefore any suggestions of omitted species will receive grateful 
consideration. 
POLYPORUS (Eupolyporus), Fries. 
Pileus carnoso lentus, dein induratas (raro e caseoso-floccoso 
fragilis) extus absque sulcis el zonis, sed contextus radians fibro- 
sus (intus) saepe zonatus. Pori numquam stratosi. 
A. Ovini. Mesopodes, carnosi, terrestres. 
* Pileo impolito , squamoso floccosove. 
1 tessulatus, Fr. Hym. Eur. 523. 
2 tuberaster, Fr. Hym. Eur. 523. 
3 subsquamosus, Fr. Hym. Eur. 523. 
4 nodipes, Berk. Hook. Journ. 1852, 136. 
5 ovinus, Fr. Hym. Eur. 523. 
6 flavo-virens, B. Rav. Grev. i. 38. 
7 Ellisii, Berk. Grev. vii. p. 5 
8 leucomelas, Fr. Hym. Eur. 523. 
9 pescaprae, Pers. Champ. Com. t. 5. 
v. scobinaceus, Pers. Myc. Eur. ii. 37. 
10 asprellus, Lev. Comm. 14. 
11 hydniceps, B. C. Cubensis No. 191. 
12 radicatus, Schwdn. Amer. Bor. 331. 
13 Hartmanni, Cooke Grev. xii. 14. 
14 caeruleoporus, Peck. 26 Report 68. 
15 olivaceo-fuscus, B. § Br. J^inn. Journ. xiv. 46. 
16 persicinus, B. Curt. Grev. i. 39. 
17 myclodes, Kalch. Grev. iv. 73. 
