110 Thirty-eighth Report on the State Museum. 



Trogia crispa, Fr. v. variegata. 

 Pileus and lamellse variegated with bluish or greenish-blue stains. 

 Sandlake. Sept. 



Boletus viscosus, Frost. 



This name is antedated by B. viscosus Ventur., and if the Frostian 

 species is a good one, it will be necessary to give it another name. 

 It cannot be called B. Frosth, as there is already a species bearing 

 that designation. Mr. Frost's plant is manifestly very near B. granu- 

 latus and may possibly be a variety of that species, although the 

 two, as they occur with us, are readily distinguishable. They ap- 

 pear to have been united by European mycologists. The distinguishing 

 characters are found in the color, glutinosity, glandular dots or sugary 

 granules of the tubes and stem and in the comparative length of 

 the stem. In Frost's plant the pileus is at first dark-chestnut color 

 and covered with a thick tough gluten, appearing, as the author 

 remarks, as if it "was enveloped in slime," but it becomes yellowish, 

 tawny-yellow or reddish-yellow and less glutinous with age. The 

 glandular dots are usually entirely absent from the mouths of the 

 tubes and from the stem, but when present they are very minute and 

 inconspicuous and occur chiefly at the top of the stem. This is very 

 short, varying from one-half to one inch in length, so that " the pileus 

 seems to rest upon the ground." In B. granulahis, the young pileus is 

 much paler, though variable in color, and is less glutinous. It does not 

 become conspicuously paler with age and the glandular dots or granu- 

 lations, which suggest the name of the species, are readily seen om the 

 tube mouths and stem. They usually dot the stem from top to base, 

 though sometimes they are more conspicuous on the upper part. The stem 

 is generally one to two inches long. This plant appears from midsum- 

 mer to the end of the season, but I have only seen Frost's plant in late 

 autumn. It is quite possible that the two plants run together, but from 

 the character of the differences noted it seems to me to be best at 

 present to keep them distinct, and for.convenience of reference I would 

 designate the Frostian species as Boletus brevipes, in allusion to its 

 short stem. It grows in sandy soil under pine trees. Karner. Oct. 



Boletus scaber, Fr. v. niveus. 



Swamps. Karner. Oct. This is a beautiful variety, easily recognized ^ 

 by the white color of the pileus. This, however, befcomes tinged with 

 livid-blue or greenish-blue when old. 



Boletus gracilis, Pk. v. Ly^<:viPES. 



Stem destitute of reticulations. Otherwise like the tpyical form of 

 the species. South Ballston. Sept. 



Polyporus sulphureus, Fr. 



The young growing plant sometimes exudes a pale-yellow or sulphur- 

 colored juice when cut or broken. 



Polyporus volvatus, PJc. 



This is occasionally found on balsam trunks, Abies balsamea. Adiron- 

 dack mountains. June. 



