1924' 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIII 17 



mm. where confluent, the free surfaces of the exterior clothed 

 with weak, matted, hyaline, even hairs up to 30 \l long by 1 ^ in 

 diameter; spores copious, hyaline, even, subglobose, slightly 

 flattened on one side, 4^-5 X 4-43/3 V- 



Covering areas 3-7 cm. long, y% cm. broad. 



On decorticated, decaying wood of Tsuga. Adirondack 

 Mountains, New York. 



The hairs on the exterior are like ordinary hyphae of the walls 

 and radiate outward only up to 30 y. rather than like the much 

 larger, distinctive, external hairs of C. fasciculata; the cups are 

 so firmly grown together that they are more or less mutilated and 

 the walls torn in teasing the fructifications apart with needles 

 under the dissecting microscope when immersed in water. This 

 species is noteworthy by the confluence of the cups as well as by 

 the matted, weak hairs. 



Specimens examined: 

 New York: Adirondack Mts., C. H. Peck, type (in N. Y. State 



Mus. Herb.). 



4. S. conferta Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb. 



Fructifications crowded, sometimes up to 4 to a mm. and then 

 somewhat confluent, cylindric, white with slight creamy tint, 

 clothed with slender, appressed, even hairs 75 X 2^-3 n, sub- 

 hyaline, slightly yellowish in preparations stained with eosin; 

 basidia simple, 12-15 X 4 p., with 4 sterigmata; spores white in 

 a spore collection, even, 4-6 X 2-3 \k. 



Fructifications about 1 mm. high, 200-300 [i in diameter, 

 covering areas 10 cm. or more in diameter. 



On rotten wood. Alabama and Missouri. November. 



This species may be only a small-spored form of S. fasciculata 

 but it seems to me distinct by its fructifications becoming 

 densely crowded and somewhat confluent, by the smaller spores, 

 and by the hairs being slightly yellowish. It was distributed by 

 Ravenel under the name.#. villosa, with the European concept 

 of which it does not agree. Where most densely crowded, the 

 fructifications shrink apart in drying, showing bare areas of wood 

 as in S. polyporoidea from which S. conferta differs in oblong 



