68 Forty-third Annual Report on the 



ous, the young margin byssoid or fimbriate, greenish-yellow, soon dis- 

 appearing; pores small, subrotuud, elongated, the dissepiments thin, 

 rather soft; spores minute, subelliptical, .00016 to .0002 in. long, .00008 

 to .00012 broad. 



Decaying wood of maple, Acer saccharinum. Sevey. July. 



Apparently closely related to Poria xantha, but separable from the 

 matrix and remarkable for its somewhat gelatinous subiculum. It is 

 an attractive species. 



Hydnum stratosura, Berk. 



Lower side of an old log. Syracuse. Underwood. 



This is a very singular species. The subiculum appears as if 



formed of a coarse brown tow-like tomentum, while the aculei appear 



in two or three strata one above another. They are connected at the 



base by slender branches or processes similar to themselves in color 



and texture. 



Hydnum pallidum, G. & E. 



Dead branches of oak, Quercus alba. Manor. September. At first 

 small suborbicular patches appear with distant aculei, but with age 

 these patches become confluent and the aculei longer and more 

 numerous. The subiculum, when dry, becomes rimose as in species 

 of Corticium. The spores in our specimens are minute, elliptical, 

 .0002 in. long, .0001 to .00012 broad. 



Hydnum acutum, Pers. 



Decaying wood of deciduous trees. Sevey. July. 



The species of Persoon has been regarded as having doubtful value 

 by some European authors. Our plant agrees tolerably well with his 

 description. It forms irregular, scarcely noticeable sj^ots, one or two 

 inches broad. The subiculum is scarcely more than a slight meali- 

 ness or prinnosity, with a somewhat indefinite margin. It is subcin- 

 ereous when moist, whitish or pallid when dry. The aculei are very 

 distant, acute or setiform, rather rigid but scarcely visible to the 

 naked eye. The spores are subglobose, slightly angular, .00016 to 



.0002 in. in diameter. 



Irpex rimosus, n. sp. 



Resupinate, at first suborbicular, then confluent, forming irregular 

 patches, thin, whitish or pallid, becoming rimose-areolate, the 

 margin more or less free or slightly reflexed; hymenium, at first sub- 

 porous or dsBdaloid, the dissepiments soon prolonged into aculei 

 which are either subulate compressed or incised, and at length 

 fasciculate from the cracking of the subiculum. 



Bark of birch, Betula lutea. Catskill mountains. September. 



