DECADES OF FUNGI. 303 
Closely allied to Pol. holopheus, Mont. and Pol. hispidus, 
Fr., but especially to the former. The colour of the pileus 
and pores is, however, far lighter than in that species, and 
the habit different. The substance of the pileus has not at 
all the yellow tint of that of Pol. hispidus, and the border of 
the pileus scarce exceeds 3 of an inch in thickness, and is 
sometimes not half so thick ; the habit is very much that of 
Hydnum ferrugineum. 
79. Polyporus (Apus) conglobatus, n. sp. pileis suberosis 
erumpentibus arctissime imbricatis massam globosam effor- 
mantibus, arcuatis, rugosis fusco-purpureis margine pallido ; 
postice leviter laccatis; hymenio brunneolo; poris puncti- 
formibus ; dissepimentis obtusissimis. 
On beech bursting through the bark, Ohio, n. sees T: G. 
Lea, Esq. 
Forming a compact, globular body, 4-5 inchesin dnih, 
consisting of closely pressed, curved, imbricating pilei, united 
at the base into a mottled mass, consisting of bark highly im- 
pregnated with the mycelium, purplish brown behind, where it 
is laccate, with a dark bloom, pallid in front, substance corky, 
rather soft, ferruginous. Hymenium concave, scarcely con- 
spicuous without dividing the pilei, brown. Pores very mi- 
nute, punctiform, pale within; interstices perfectly even, 
obtuse. 
The mass behind is sometimes perforated by the larva of 
some insect, which makes large channels through it. It is, 
I believe, sweet-scented when fresh. 
This is one of the most remarkable species with which I 
am acquainted, and very distinct in habit from every species 
except Pol. graveolens, Schwein. The section.is very pe- 
culiar, and quite different from that of most other species. 
The inner substance of the bark, as it were, swells till at 
last the outer layer is ruptured, and the mass of pilei pro- 
truded, which is continued from the substance of ps 
bark. 
Schweinitz has described no Polyporus at all resembling it, 
