20 NEW YORK STATE MUSEUM 



Arisaema stewardsoni Britton 

 Moist rich soil in woods. Lake Bonaparte. June. Similar to 

 A. triphyllum in size and general appearance, but easily- 

 separated from it by the white spadix and spathe. Forms having 

 a pale but striped spathe sometimes occur and appear to be inter- 

 mediate between the two species. 



Boletus atkinsoni n. sp. 



PLATE R, FIG. I-5 



Pileus fleshy, convex or nearly plane, dry, grayish brown or 

 yellowish brown, sometimes minutely rimosely squamulose, flesh 

 white, taste mild; tubes convex, plane or slighth' concave in the 

 mass, adnate or slightly depressed around the stem, 3-4 lines long, 

 the mouths minute, at first whitish and stuffed, soon open and 

 yellow or subochraceous ; stem stout, equal or slightly thickened 

 at one or both ends, solid, reticulated wholly or at the top only 

 with fine anastomosing brownish lines, pallid; spores fusiform or 

 oblong, .0004-. 0005 of an inch long, .0001 6-. 0002 broad. 



Pileus 3-4 inches broad; stem 2-4 inches long, 6-12 lines thick. 



Woods. Port Jefferson. August. The species belongs to the 

 section Edules. The reticulations of the stem are so delicate 

 that they sometimes nearly disappear in drying. 



Boletus laricinus Berk. 

 Under larch trees, Larix decidua Mill. Washington 

 park, Albany. October. C. H. Prescott. Edible. 



Boletus nobilis n. sp. 

 Woods. Port Jefferson. August. Edible. For description of 

 the species see article on edible fungi. 



Boletus rugosiceps n. sp. 



PLATE Q, FIG. 6-IO 



Pileus firm, fleshy, very convex or hemispheric, becoming broadly 

 convex, dry, rugosely pitted, ochraceous, sometimes tinged with 

 red or orange, occasionally rimose areolate, the thin margin often 

 extending slightly beyond the tubes, flesh white or whitish; tubes 

 at first closed, depressed around the stem, their mouths yellow, 

 becoming darker with age, minute, round; stem firm, subequal, 

 solid, with elevated longitudinal lines or ridges, do-tted with numer- 

 ous browmish or yellowish points, pallid, often narrowed at the 

 base; spores oblong fusiform, .0006-. 0008 of an inch long, .0002- 

 .00024 broad. 



