1931] The Collybias of North Carolina 103 



2658. On rotten oak log, low damp woods by Battle's branch, July 12, 1917. 

 The characteristic odor of the type was absent when fresh, but was slightly 

 noticeable when dry. Taste faint, but unmistakably that of type. 

 Other plants with very strong characteristic taste and odor were grow- 

 ing on the same log with this, but several feet away. 



3112. New Hope Swamp on decaying bark, June 23, 1918. 



20. Collybia stipitaria Fr. 



Marasmius stipitarius (Fr.) Atk. and House. 

 Agaricus scahellus Alb. and Schw. 



Plate 23 



Cap 5-12 mm. broad, convex, depressed a little around the center 

 which is itself concave, roughly fibrous, that is, the inherent fibers 

 forming irregular elevated ridges and near the margm pinched into 

 squamules, pale tan to gray or brownish-gray, the center (in No. 3370) 

 abruptly a much deeper gray-brown; texture of cap and stem tough 

 and persistent; taste and odor none. 



Gills rather distant, about 1 mm. broad, abruptly sinuate at the 

 stem and nearly or quite free, pale-creamy white, the margins toothed. 



Stem 2-5 cm. long, 0.5-1 cm. thick, equal, spongy-scurfy all 

 over, inserted, i. e. disappearing into the substratum and not aris- 

 ing from superficial mycelium; about color of cap center, the tip shad- 

 ing to tawny. 



Spores smooth, oval to elliptic, 5.1-6.2 x 8.9-10.4 [i. Cystidia 

 acute to mucronate, simple. 



Easily recognized by the fibrous-squamulose cap, dark center, 

 nearly free gills and spongy stem surface. It is distinguished from 

 C. zonata, which is near, by the smaller size, absence of fishy smell and 

 longer spores. For discussion of this and related species see Atkinson 

 in Bull. N. Y. St. Mus. 205-206: 61. 1919. Massee gives measure- 

 ments of C. stipitaria as: cap 4-11 mm. across and stem 1-2 in. long. 

 For other illustration see Lloyd, Mycological Notes 1, No. 5: 42, fig. 

 15, 1900. 



3370. On herbaceous debris, grove in front of Gimghoul Lodge, June 26, 1919. 



Asheville. Beardslee. 



Middle and upper districts, on decaying trunks. Curtis. 



