[Vol. 13 

 272 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



tional confirmatory characters which should identify the species. 

 The hyphal structure is unique but not likely to be observed 

 unless close study is made. 



Specimens examined: 

 Canada : Ottawa, /. Macoun, 4 t 3- 

 New Hampshire: Chocorua, W, G. Farlow, 7. 

 Vermont: Middlebury, E. A. Burt, type. 

 Cuba: Ceballos, C. J. Humphrey, 2793 (in Mo. Bot. Gard. Herb., 



20200). 



81. C. luridum Bresadola, Fungi Trid. 2: 59. pi 169. 1898; 

 Sacc. Syll. Fung. 16: 119. 1902. 



Gloeocystidium luridum (Bres.) v. Hohnel & Litschauer, K. 

 Akad. Wiss. Wien Sitzungsber. 116: 770. 1907; Bourdot & 

 Galzin, Soc. Myc. Fr. Bui. 28: 360. 1913. 



Type: part of type in Burt Herb. 



Fructifications broadly effused, adnate, sometimes rather thick, 

 small pieces separable when moistened, becoming cinnamon-buff 

 to avellaneous in the herbarium, not shining, even, sometimes 

 somewhat cracked with age, the margin similar; in section 150- 

 300 [l thick, slightly colored, composed of densely arranged 

 hyphae 2-3J/2 pl in diameter and not incrusted, which run parallel 

 with the substratum in a narrow layer and then become erect and 

 mixed with gloeocystidia in a broad layer which bears the hy- 

 menium; gloeocystidia numerous, slightly colored, flexuous, 50- 

 100 X 6-7 \l; spores hyaline, even, 6-8 X 3-5 [l. 



Fructifications 3-4 cm. long, 1-4 cm. wide and broken off at 

 both ends in the fragments received. 



On bark and wood of frondose species. In Europe, Ohio, and 

 Manitoba. Autumn. Rare. 



C. luridum may be recognized among our species by its slightly 

 colored gloeocystidia and resemblance in general aspect and color 

 to Peniophora velutina. The spores were published by Bresadola 

 as 10-17 X 6-8 (x but I have found none so large in the specimen 

 received. 



Specimens examined: 

 Italy: Florentia, Martelli, type, from Bresadola. 

 Ohio: Preston, C. G. Lloyd, 1558. 



