1921] The Collybias of North Carolina 99 



6-7.5 [J. thick at ])ase and of variable length up to 55 [i. Flesh less 

 than 0.5 mm. thick, nearly tasteless and odorless, toughish; threads 

 of flesh about 3.7 ;j, thick. 



Gills white or palely concolorous, rather close, ventricose, 1.5 mm. 

 wide in center, rounded at stem and slightly adnexed, not veined or 

 branched. 



Stem 1.5-4 cm. long, 0.5-0.9 mm. thick, finely puberulent all over 

 like the cap, except in the basal region which is covered for some 

 distance by long, woven, fine buff hairs which bind the stems together; 

 color a clear ochraceous buff all over except for the abruptly whitish 

 tip; tough, hollow. 



Spores minute, smooth, elhptic, pointed at one end, 2.2-2.9 x 

 5-6.3 [J. . Basidia 4-spored, about 4.4 [jl thick and 18 \x long. Cystidia 

 present, contracted above the swollen body. 



Mostly cespitose, but some single. It approaches very closely to 

 Marasmius, reviving quite well in water. 



This is certainly C. conigenoides, every character agreeing with the 

 original description (Bull. T. B. C. 6: 76. 1876). We have examined 

 a collection determined by Ellis and distributed as No. 3503 in Ellis 

 and Everhart North American Fungi on cone of Magnolia Fraseri 

 from Nuttallburg, W. Va. (Herb. Dept. Agr., Washington). Although 

 in bad condition this specimen is without doubt the same as ours, 

 with the long buff hairs conspicuous around the stem. The species 

 is different from our plant on pine cones which we are calling C. 

 conigena. The latter has smaller spores and basidia, gills branched 

 in part, a paler stem, with white, not buff threads below, and no 

 bladder-like cells on the cap surface. 



The plant from Michigan on pine cones referred by Kauffman to 

 C. conigenoides cannot be our species on magnolia cones as the former 

 has a white stem with white hairs at the base and shorter spores. 



3545. By path in Arboretum on fallen magnolia cones, October 28, 1919. Photo. 



15. Collybia alba Pk. 



Plate. 14 



Cap 6.5-11 mm. broad, rounded-convex, white, glabrous. 



Stem 1.7-2.6 cm. long, 2 mm. thick, pure white, glabrous. 



Gills broad, ventricose, nearly free. 



Spores 4-5 X 3 ^J- 



Growing on old mossy logs and stumps. This small white species 



