98 



Mycologia 



This species is closely related to Porta spissa and may be easily 

 confused with it in herbarium specimens. Mr. Overholts found 

 the spores to be hyaline, 3.5-5 x 2.5-3.5^; cystidia none. In re- 

 cently collected young specimens, I found copious spores meas- 

 uring 3-4 x 3 /x. In a collection made a few years ago, the spores 

 were ovoid, smooth, hyaline, 3.5 x2.5 ft, and one flask-shaped, 

 pointed, yellowish cystidium was found measuring 25x8^. 

 Poria saloisensis P. Karst. seems closely related, but is probably 

 nearer P. spissa. 



Canada, Dearness; Connecticut, Clinton, Earle 484, Graves) 

 New York, Ballon; New Jersey, P. Wilson; Pennsylvania, Sum- 

 stine 5, 6, 10, 12, 14, 34, 66 ; Virginia, Murrill 389. 



70. Poria incrassata (Berk. & Curt.) Burt, Ann. Mo. Bot. 

 Gard. 4: 360. 1917 



Merulius incrassatus Berk. & Curt. Hook. Lond. Jour. Bot. 1 : 



234. 1849; Grevillea 1: 70. 1872. 

 Merulius spissus Berk. Grevillea 1 : 70. 1872. 

 Polyporus p'meus Peck, Ann. Rep. N. Y. State Mus. 41 : 78. 



1888. 



Poria pinea Sacc. Syll. Fung. 9: 194. 1891. 



This very interesting species, which has been carefully studied 

 both by Burt and Overholts, may be readily recognized by its 

 large, dark spores. It somewhat resembles P. taxicola in gross 

 characters, but belongs decidedly to Poria rather than to Meru- 

 lius. Curtis collected his original specimens on a pine stump in 

 South Carolina, and Peck obtained his on pine at Selkirk, New 

 York. The margin is whitish or yellowish and the hymenium 

 dingy-white, becoming purple to black with age. The spores are 

 fuscous, 7.5-1 1 x 4-7 fx, and there are no cystidia. 



In addition to the original specimens already mentioned, which 

 I have seen at Albany, Kew, and elsewhere, I find several speci- 

 mens in the Ellis Collection that represent stages not shown in 

 the types. One of these collections is assigned a manuscript name 

 by Ellis and the following notes accompany it : " Margin narrow, 

 erect, tomentose, white, the edges fringed with short, spine-like 

 hairs or bristles ; mouths of tubes white, dull-reddish within ; 



