Statje Museum of Natural History. 85 



Russula sordida, Pk. 



A large form of this species was found growing under hemlock 

 trees at Gansevoort. The j)ileus was four to eight inches broad, at 

 first white or wliitish, umbilicate or centrally depressed; then more 

 or less stained with smoky-brown or blackish hues and subinfundi- 

 buliform. The flesh is white and taste mild; the stem is short, one to 

 two inches thick, solid, white, and somewhat pruinose; the lamellae 

 a^'e distant, unequal, very brittle, tinged with yellow. Every part of 

 the plant turns blackish or violaceous-black where wounded. By this 

 character it is distinguished from R. nigricans, in which the flesh at 

 first becomes red where broken. 



Marasmius salignus, Pk. var. major'* 

 Pileus six to ten lines broad; lamellse broad, distant, decurrent, the 

 interspaces venose; stems often csespitose. 

 Bark of willows. Gansevoort. July. 



Marasmius androsaceus, Fr. 



Two forms of this species occur here as in Europe. There the form 

 with j)aler pileus grows on fallen leaves of frondose trees, the one 

 with darker or fuscous pileus on leaves of acerose trees. Here the 

 form with pale pileus abounds, in wet weather, on fallen leaves of 

 spruce trees, and the one with fusc6us pileus on fallen pine leaves. 

 Often the two forms grow in close proximity to each other, yet, in 

 every instance observed, the difference of color corresponds to this 

 difference in habitat. 



Marasmiius praeacutus, Mlis. 

 Fallen pine leaves. Catskill mountains. September. 



Polyporus cseruleoporus, Pk. 



On exposure to the light the blue q^olor gradually fades to a grayish 

 hue. Sometimes specimens occur with one-half of the pileus exposed 

 and faded, the other half sheltered and retaining its normal grayish- 

 blue color. The pores retain the blue color longer than the pileus, 

 but the whole plant fades in drying. The flesh of the pileus is white. 



Polyporus vulgaris, Fr. 



A form with vesicular pores, a vertical section of the hymenium being- 

 porous, was found on poplar at Gansevoort. September, P. obducens, 

 P. adustus and P. sidtacidus have all a similar vesicular form. I am 

 satisfied that the genus MyriadojDorus, which was founded on such 

 fonns, is not a good one and should be abandoned. 



