1917] 
BURT—MERULIUS IN NORTH AMERICA 339 
from both of which this species differs by being truly resup- 
inate, by having smaller, equal pores, and by not having a 
gelatinous layer. 
Specimens examined: 
Sweden: Stockholm, Z. Romell, 391; Upsala, C. G. Lloyd, 
08430 (in Lloyd Herb.). 
Germany: Westfalen, W. Brinkmann, comm. by G. Bresadola. 
Vermont: Middlebury, Е. A. Burt. 
Illinois: River Forest, E. T. € S. A. Harper, 966. 
Cuba: Managua, Havana Province, Earle € Murrill, 13 (in 
N. Y. Bot. Gard. Herb.). 
26. M. ceracellus Berk. & Curtis, Grevillea 1: 69. 1872; 
Васе. Syll. Fung. 6: 418. 1888. 
Type: type and cotype in Kew Herb. and Curtis Herb. 
Fruetifieation wholly resupinate, adnate, thin, the margin 
thin, whitish; hymenium drying ochraceous cream-buff to 
pinkish buff, rarely paler, even at first, becoming minutely 
pitted with pores about 4-6 to a mm., contract- x 
ing in drying and cracking so as to show the Sq 
cottony subieulum and sometimes flaking away Fig. 24 
from the substratum; in structure 60-200 u м. ceracellus. 
thick, with the folds standing out up to 140 и aero an на 
further, composed of interwoven, hyaline 
hyphae 2-3 шіп diameter, not incrusted, not usually nodose- 
septate; with a more or less interrupted, Isabella-colored sub- 
hymenial zone in preparations stained with eosin; no cystidia; 
spores hyaline, even, flattened on one side, 444 14-2 y. 
Fructifications 21-5 em. long, 1-2 cm. broad. 
Under side of decaying limbs of oak and other frondose 
species. Canada to Alabama and in New Mexico and Wash- 
ington. July to March. Common. 
M. ceracellus is related to specimens from Sweden, com- 
municated by Romell as M. serpens, but our American speci- 
mens have smaller and shallower pores, are thinner, have 
hyphae which are usually not nodose-septate, and in my 
stained preparations show only here and there an incomplete, 
Isabella-colored zone confined to the subhymenial region. In 
