Report of the Botamst. 57 



Boletus albus Pk. 



This is another Boletus of rare occurrence. When young the tubes are 

 white, but they at length become yellow or ochraceous-yellow. The flesh is 

 white and the plant when fresh emits a fetid odor. 



Boletus subtomentosus L. 



A form of this species occurs in which the costee of the stem anastomose in 

 such a way as to form large but rather obscure reticulations. Is it B. lanatus 

 Rost. ? Another form having the pileus and stem darker-colored than usual 

 occurs on much decayed prostrate trunks Of trees and about old stumps. The 

 chinks of the pileus are sometimes whitish. 



Boletus affinis Pk. 



A fine variety of this species was found at G-ansevoort, in which the pileus 

 was beautifully mottled by small yellowish spots. It merits the name var. 

 maculosus. 



Boletus modestus Pk. 



This rare species sometimes has the flesh of the pileus yellowish. The 

 stem is minutely scurfy or furfuraceous. 



PuLYPORUS C^ERULEOPORUS Pk. 



A form of this species was found at South Corinth, in which the whole plant 

 was grayish-blue except the flesh which was white. 



Polyporus Rhipidium Berk. 



There is a slight viscidity to the pores of this species. The pileus fades 

 with age. 



Polyporus spumeus Fr. 



A large form of this plant, with pilei sometimes six or eight inches across, 

 occurred at Brewerton. 



Polypokus borealis Fr. 



This sometimes occurs on hemlock stumps. It then differs from the form 

 on spruce in having the pileus broader, wholly white and strigose-hairy or 

 fibrous-hispid. 



Polyporus volvatus Pk. 



The form recently published under the name Polyporus obvolutus Berk. & 

 Cke. is not specifically distinct from this species, according to specimens 

 received from Mr. Ellis. 



Clavarta botrytes Pert. 



When old the branches both of this species and of C. flam become elon- 

 gated, obtuse, very fragile and of a uniform color. The yellow tips of the 

 latter and the red ones of the former species wholly disappear. 



Myruthecium Fung i col a Pk. 



This species has recently been referred to M. inundatum Tode. The 

 spores in that species are represented in Sturnis Dutchland Flora as globose. 

 In our plant they are oblong or cylindrical, a difference which seems to me to 

 be of specific value. 



