68 NEW YORK STATE MUSEUM 



Collybia ignobilis Karst. 



Ignoble Collybia. 



(Syl. vol. V. p. 246.) 



Pileus slightly fleshy or membranous, slightly convex or plane with the 

 disk slightly depressed, glabrous, livid when moist, with a grayish reflection 

 and the spreading margin obsoletely striatulate, grayish or pallid when 

 dry; lamellae close, dingy or pale, emarginate; stem equal, hollow, livid 

 or palhd with a grayish or whitish floccose pruinosity; spores elliptical, 

 guttulate, hyaline, .00028 to .00032 inch long, .00016 inch broad. 



Pileus 6 to 12 lines broad; stem i to 2.5 inches long, i to 2 lines thick. 



Mossy ground in woods of balsam fir. Adirondack mountains. Sep- 

 tember. 



The specimens here referred to this, species differ slightly from the 

 typical form as set forth in the description. The pileus is hemispherical 

 or convex, brown and striatulate on the margin when moist, pale-gray 

 when dry, and the stem is glabrous except at the top where it is adorned 

 with a few white floccose particles. The depression of the disk gives an 

 umbilicate appearance to the dried specimens. In recognition of these 

 differences I label our specimens Var. convexa. 



EXTRALIMITAL SpECTES. 



The following species of Collybia have been recorded from various 

 parts of the United States, but have not yet been found in New York. 

 To facilitate their identification they have been arranged in their respec- 

 tive tribes, so far as this could be ascertained from the descriptions, and 

 an analytical table of distinguishing characters has been given. Doubt- 

 less this table could be greatly improved if an actual inspection of the 



specimens could be had. 



Striaepedes. 



Plants csespitose i 



Plants scattered or gregarious 2 



I Lamellae white, adnate C. Texensis B. 6^ C. 



I Lamellae yellowish, free C. loripes Fr. 



2 Pileus russet-brown C. stereocephala B. &= C. 



2 Pileus white, stem not bulbous C Spragueii B. &> C. 



Vestipedes. 



Clothing of the stem uniform I 



Clothing of the stem dense below, thin above C. a'bogrisea Fk. 



I Stem densely velvety , 2 



I Stem thinly pubescent 3 



