Report of the Botanist. 33 



stem firm, thickened at the base, glandular-dotted, exannulate, solid, rhu- 

 barb-yellow; spores .00035- 0004' long, .00016' broad, flesh yellowish, inclin- 

 ing to grayish in the stem. 



Plant 2'-4' high, pileus 2'-3' broad, stem 3 '-5" thick. 



Ground in woods. Gansevoort. Aug. 



This species belongs to the section Viscipelles. It is related to such species 

 as B. albus, B. granulatus, etc. Its rhubarb-colored stem thickened at the 

 base and the brownish color of the young hymenium are its distinguishing 

 features. 



Boletus rubinellus n. sp. (Plate II, figs. 18-20.) 



Pileus at first broadly conical or subconvex, then expanded, subtomentose, 

 red, becoming paler with age ; tubes convex, adnate or somewhat depressed 

 around the stem, rather large, subrotund, pinkish-red, then sordid-yellow; 

 stem equal, smooth, yellow with reddish stains; spores oblong, .0005-.0006' 

 long, .00016' broad ; flesh of both pileus and stem bright-yellow. 



Plant about 2 ; high, pileus V-2' broad, stem 1 '-2'' thick. 



Ground in woods. Gansevoort'. Aug. 



The species belongs to the section Subtomentosi, and is apparently related 

 to B. rubinus. 



Boletus sensibilis n. sp. 'l/^ 



Pileus at first firm, convex, pruinose-tomentose, brick-red, then expanded, 

 paler or ochraceous-red, glabrous, soft ; tubes at first plane or concave, bright- 

 yellow, then tinged with green, finally sordid-yellow, small, subrotund ; stem 

 firm, smooth, lemon-yellow, narrowed at the top when young, and sometimes 

 slightly cribrose from the decurrent walls of the tubes, often stained with red 

 or rhubarb- color ; spores greenish-brown, .0005' long, .00016' broad; flesh 

 of the pileus pale-yellow, of the stem brighter colored and marbled, both flesh 

 and tubes quickly changing to blue when wounded. 



Plant scattered or casspitose, 4'-6' high, pileus 3'-8' broad, stem 6 / -12 // 

 thick. 



Ground in woods. Gansevoort. Aug. 



The species belongs to the section Subpruinosi. The specific name is sug- 

 gested by the ease and rapidity with which the change of color is produced. 

 Merely handling the specimens produces the blue color where they are pressed 

 by the fingers. The species seems near B. miniato-olwaceus, but the differ- 

 ence in the color of the pileus and in the character of the stem and its sus- 

 ceptibility to change of color seem to require its separation. 



Boletus roxan^e Frost. 



Ground in woods. Sandlake. Aug. 



The margin of the pileus in our specimens is conspicuously involute when 

 young. The stem is sometimes yellow at the top. The species belongs to 

 the section Edules. • 



Polyporus parvulus Klotsch (P. connatus Schw.). 

 Burnt ground. Brewerton. Sept. 



Either a closely related species or else a variety of this one sometimes 

 occurs on shaded banks by roadsides. It has the large pores and spores of 

 3 



