Report of the State Botanist. 25 



whitish, fibrillose, with a white mycelium at the base ; spores 

 elliptical, .00024 in. long, .OOUlO broad, often containing a shining 

 nucleus. 



Pileus 2 to 3 lines broad ; stem 6 to 8 lines long. 



"Damp naked soil in woods. Selkirk. July. 



This is a very small species closely allied to Tuharia auto- 

 chthons , from which it is separated by the shape and color of the 

 pileus, the decidedly decurrent lamellae and the fibrillose stem. 

 As in that species, the spores are unusually pale. The dry pileus 

 is distantly sulcate or striate. 



Agaricus subrufescens n. sp. 



Pileus rather thin and fragile, at first deeply hemispherical, 

 then convex or broadly expanded, often wavy or irregular, silky- 

 hbrillose or minutely and obscurely squamulose, varying in color 

 from whitish or grayish to dull reddish-brown, flesh Avhite, 

 unchangeable ; lamellae close, free, at first white or yellowish- 

 white, then pinkish, finally blackish-brown ; stem minutely floc- 

 culose below the annulus, hollow, white, somewhat thickened or 

 bulbous at the base ; the annulus membranous, white, externally 

 flocculose ; the mycelium white, forming slender branching root- 

 like strings; spores elliptical, brown, .00024 to .00028 in. long, 

 .00016 to .0002 broad. 



Pileus 2 to 4 in. broad ; stem 2 to H in. long, 4 to 8 lines thick. 



Leaf mold. Glen Cove. October. W. Falconer. Also culti- 

 vated. 



In the form of the young pileus and in its color in the reddish 

 tinted specimens, also in the white color of the young lamellae, 

 this species makes an approach to A. cam.j'estris var. rufescens, 

 but unlike that variety the wounded flesh does not become red. 

 From typical A. cu/mijentrU it differs in many respects — in the 

 thin flesh, the color of the young lamellae, the character of the 

 stem and its annulus and in its mycelium. It resembles more 

 closely A. placoinyces and A. Ktlvdiicus^ but from the former it 

 may be separated by the shape of the pileus and the more obscure 

 character of its scales and by its annulus, from the latter, by the 

 color of the pileus and the young lamelUv and also by the annulus, 

 which is externally floccose-squamulose and also not distant as in 

 that species. 



1892. 4 



