90 Journal of the Mitchell Society [December 



3046. On damp ground, Strowd's lowground woods, May .5, 1918. 



3052. Same locality as No. 3046, May 7, 1918. 



3128. Same locality as No. 3046, May 18, 1918. Spores 3-3.8 X 5.8-7^. 



3130. Same locality as No. 3046, May 22, 1918. 



5. Collybia nummularia Fr. 

 Collybia sirictipes Pk. 



Plates 10 and 23 



This medium-sized plant grows generally in small tufts on rotting 

 leaves in low woods. Cap up to 5.5 cm. broad, convex, then expand- 

 ed, sometimes slightly depressed on one side, somewhat striate on 

 margin, barely umbonate, yellowish-tan in color, often with tint of 

 pink, the center almost brick red and usually a little rugose, often ap- 

 pearing water-soaked. The pileus sometimes shows concentric circles 

 near the margin, evidently due to the plants being water soaked and 

 drying in stages. 



Gills close, and not very narrow, white or light flesh-colored, sin- 

 uate-attached, or sometimes free, not quite reaching the outer edge 

 of the cap, many short ones. 



Stem 3.5-7 cm. long, 3-7 mm. thick, cartilaginous, hollow, smooth, 

 flesh-colored or whitish, darker at base, nearly equal, connected with 

 extensive cream-colored mycelium that runs among the leaves. 



Spores long, pip-shaped, white, smooth, 3.7 x 7.4-8 [i, character- 

 istically pointed and bent at the mucro end. 



Peck says of C. strictipes (Rep. 49: 44. 1896): "From small un- 

 spotted forms of C. maculata this species may be distinguished by its 

 even stem, less crowded lamellae and by the shape of its spores." 

 From C. dryophila it is distinguished by the more yellowish cap with 

 reddish, more or less rugose center, the more equal, paler, and more 

 translucent stem, and by the longer, more pip-shaped spores. It is a 

 common species and easily recognized. Kauffman has developed 

 this species (as C. strictipes) from mycelium in leaf-mold brought into 

 the laboratory and kept in a partially covered dish (Mich. Acad. Sci. 

 Kept. 22: 203. 1920). 



82. On leaves near Howell's Branch, October 4, 1911. 



83. Among leaves, Battle's Park, October 28, 1911. 



354. On rotting leaves near Howell's Branch, October 11, 1911. Spores pip- 

 shaped, mostly pointed and slightly bent at one end, 4 X 9/l(. 

 584. Near Howell's Branch, October 18, 1912. Spores 3.5-4.5 X 6-9.5^. 



