1917] 
BURT—MERULIUS IN NORTH AMERICA 331 
basidia in abundance, hence I conclude that this species is a 
Merulius rather than a Poria. It is chiefly characterized by 
translucence when fresh, changing to pinkish buff or a little 
darker on drying, by longer tubes than those of any other 
species known to me, and by the globose, hyaline spores. It 
is possible that this species may have been already published 
as a Poria, but if so, I am unaware of the fact. 
Specimens examined: 
New York?: W. A. Murril, type (in N. Y. Bot. Gard. 
Herb.). 
17. M. bellus Berk. & Curtis, Grevillea 1: 69. 1872; басс. 
Syll. Fung. 6 : 418. 1888. 
Type: type and eotype in Kew Herb. and Curtis Herb. 
Fructification resupinate, effused, membranaceous, soft, 
separable, the margin byssoid, whitish; hymenium аа pale 
olive-buff to warm buff and оссо Е buff, even at first, 
becoming minutely pitted with very shallow, 
angular pores about 2—4 to a mm.; in structure Ü 
100-200 y thick, with the folds standing out "e 
up to 200 џ more, composed of loosely inter- “е 
woven, rather straight, hyaline hyphae 3 y in Fig. 15 ч 
diameter, which branch at a right angle and M. bellus. 
are incrusted towards the hymenium, not gears die 
ee p f. 14. 
usually nodose-septate, and form a narrow, 
more or less interrupted, Isabella-colored subhymenial zone 
in preparations stained with eosin; no cystidia; spores hya- 
line, even, flattened on one side, 3-41x(14-2 y. 
Fructifications 2-7 em. long, 1-3 em. broad. 
On wood and bark of pine, spruce, hemlock, and cedar. 
Vermont to Alabama and westward to Michigan. August to 
October. Rare. 
This species may be distinguished from M. ceracellus by its 
somewhat pulverulent, rather than waxy, surface, occurrence 
on coniferous wood and bark, straighter and inerusted 
hyphae, and fructification separable as a membrane. It be- 
longs in the group with М. fugax, from which it differs in 
having pores, smaller spores not broadly oval or subglobose, 
