[Vor. 4 
322 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
be decided by making frequent collections of this species 
through a season in some locality where it occurs. The 
Canadian collection cited below is referred to M. pallens with 
doubt, because the specimen is a resupinate fragment not hav- 
ing any portion of its natural margin. 
Specimens examined: 
Canada: Wakefield, J. Macoun, 53 (in N. Y. Bot. Gard. 
Herb.). 
Pennsylvania: Bethlehem, Schweinitz, type (portion in Curtis 
Herb.), and the Merulius crispatus of Syn. N. Am. Fungi, 
499 (portion in Curtis Herb.). 
Louisiana: St. Martinville, А. B. Langlois, am (in М. Y. Bot. 
Gard. Herb.). 
Florida: West Palm Beach, В. T'haxter, 78 (in Mo. Bot. Gard. 
Herb., 4064, and in Farlow Herb.). 
Texas: Billings, 78, comm. by Ravenel (in Curtis Herb., under 
the name M. corium). 
California: Aleantrar, C. Wright, U. S. Pac. Ex. Exped., 254 
(in Curtis Herb., under the name M. corium). 
8. M. corium Fries, Elenchus Fung. 1: 58. 1828; Epier. 
900. 1838; Hym. Eur. 591. 1874; Sace. Syll. Fung. 6: 413. 
1888. 
Fructification resupinate, effused, coriaceous, soft, thin, the 
2 margin at length free, reflexed, villose, white; 
>> hymenium retieulately рогове, drying pinkish 
S — buff to cinnamon, the pores about 3 to a mm., 
І shallow; іп structure 300-500 д thick, com- 
ші ац posed of loosely interwoven, hyaline hyphae 
M. corium. А А 
Hypha, spores 9-4 и in diameter, not incrusted, not nodose- 
septate; no cystidia; spores hyaline, even, 
cylindric, flattened on one side, 44-513-21 ш 
in American collections (6-73 џ in the European specimens, 
but 6-12 24-4 и according to Bresadola and Brinkmann). 
Fructifications 1-4 cm. in diameter, often laterally confluent 
on a horizontal surface for 6 cm., Ше reflexed margin 1-3 mm. 
broad. 
On bark of dead limbs of frondose species. Massachusetts 
x 870. 
See pl. 20, f. 7. 
