1917] 
BURT—MERULIUS IN NORTH AMERICA 335 
with the folds standing out 100-300 д further, composed of 
suberect, closely crowded, thin-walled, hyaline hyphae 21-3 д 
in diameter, incrusted, occasionally nodose-septate; spores 
hyaline, even, flattened on one side, 624-3 y. 
Fructifications 2-3 em. long, 1-14 em. broad. 
On bark of decaying frondose wood. British Columbia. 
January. Probably rare or local. 
This species is well characterized by its adnate habit, tomen- 
tose surface, sinuous pores and folds — the latter with thick 
edges — warm buff color, and erect, incrusted hyphae. 
Specimens examined: 
British Columbia: Sidney, J. Macoun, 15, type (in Mo. Bot. 
Gard. Herb., 5733). 
22. M. hirtellus Burt, n. sp. 
Type: type in Farlow Herb. and Mo. Bot. Gard. Herb. 
Fructification resupinate, effused, adnate, thin, the margin 
byssoid, drying vinaceous-gray; hymenium light buff and 
minutely pitted when young or near the 
margin, then becoming pinkish buff, waxy, 09 
reticulately plicate and shallowly porose with 2 | 
angular pores about 2 to а mm.; in structure в. j 
300-400 yu thick, with the folds standing out Фи Ü A 
50-200 u more, composed of loosely inter- Му 124 
woven, hyaline hyphae 3-34 шіп diameter, Та 
not nodose-septate, occasionally incrusted in Fig. 20 
the tramal tissue of the folds but not else- M. hirtellus. 
where; cystidia are weak, cylindric, obtuse, cystidium 
granule-incrusted hairs 34 и in diameter, 0 
emerging 15-30 р from the folds; spores hya-  cystidia o 
line, even, ellipsoidal, 3-34 11-2 и as seen р - че pe ЛЬ 
on basidia; in preparations stained with 
eosin a narrow subhymenial zone is stained Isabella-color 
temporarily. 
Fructifications 11-4 ст. long, 1-14 em. broad. 
On frondose wood. Massachusetts. November. Rare. 
Only two fructifications of this species were collected. Both 
have the central portion of the fructification pinkish buff and 
