Report of the State Botanist. 85 



and color to A. lacteus, from which I have separated it on account of 

 the decurrent toothed lamellae and the longer spores. The striations of 

 the pileus are also more distinctly visible in oiir plant when dried than 

 they are when it is fresh. 



Agaricus (Mycena) vexans, n, sp. 



Pileus membranous, conical sub-campanulate or convex, rather dis- 

 tantly striate, blackish-brown, sometimes slightly pruinose ; lamellae sub- 

 distant, ascending, adnate or uncinate-adnate, slightly venose-connected, 

 at first white, becoming grayish or smoky white, the edge paler ; stem 

 slender, rather tenacious, hollow, glabrous, colored like the pileus, some- 

 what floccose-villose at the base ; spores sub-elliptical, .0003 to .00035 

 in. long, .0002 to .00025 broad ; odor slight, alkaline. 



Plant scattered or gregarious, not caespitose, 2 to 2.5 inches high, 

 pileus 4 to 6 lines high and broad, stem, scarcely 1 line thick. 



Ground in thin woods and open places. Adirondack mountains. 

 June. 



I have placed this species in the section Filipedes, although the 

 slightly venose interspaces ally it to the Rigidipedes, and the alkaline 

 odor shows a relationship to the Fragilipedes. It appears to be closely 

 related to A. ura?iius, from which it may be distinguished by its larger 

 size, different color and pileus not expallent. The pileus is not hygro- 

 phanous, and is striate even in the dried state. The lamellae in the 

 dried plants are brownish, with the edge nearly white. 



Agaricus (Mycena) purpureofuscus, n. sp. 



Pileus membranous, campanulate or convex, obtuse, glabrous, striate, 

 purplish-brown ; lamellae ascending, lanceolate, subdistant, adnate, 

 white or whitish, purplish-brown on the edge ; stem slender, even, 

 hollow, glabrous, with white hairs at the base, colored like the pileus or 

 a little paler; spores sub-globose or broadly elliptical, .00025 t0 -0003 

 in. long, .00025 broad. 



Plant 1 to 3 inches high, pileus 4 to 8 lines broad, stem scarcely 1 

 line thick. 



Mossy prostrate trunks of spruce trees in woods. Caroga. July. 



This species belongs to the section Calodontes, and is so closely re- 

 lated to A. nibromarginatus, that it is with some hesitation that I have 

 separated it. Because of its darker color and the absence of the hygro- 

 phanous character of that species, it has seemed best to keep it distinct. 

 Its even, not striated, stem forbids its reference to A , atromarginatus. 



Agaricus discopus, Lev. 



Base of dead fern stems. Sandlake and Karner. Sept. and Oct. 



The bulb at the base of the stem in our specimens is not as distinct 

 as in the published figures of the species, but in other respects the spe- 

 cific characters are present. 



Agaricus hiemalis, Osbech. 



Prostrate trunk of spruce, Abies nigra. Adirondack mountains. 

 June. 



