[Vol. 13 

 258 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



noteworthy by its snow-white color; the long spores and gloeo- 

 cystidia with occasionally capitate or moniliform apex may be 

 helpful, confirmatory characters. 



Specimens examined: 

 Alabama: Montgomery Co., R. P. Burke, 672 (in Mo. Bot. Gard. 



Herb., 63092). 

 Manitoba: Winnipeg, G. R. Bisby, 1346, type (in Mo. Bot. 



Gard. Herb., 60556). 



68. C. stramineum Bresadola, Hedwigia 39: (221). 1900; 

 Sacc. Syll. Fung. 16: 193. 1902. 



Gloeocystidium stramineum Bresadola in Brinkmann, West- 

 falische Pilze, 18; Bourdot & Galzin, Soc. Myc. Fr. Bui. 28: 361. 

 1913. See Wakefield, Brit. Myc. Soc. Trans. 4: 341. 1918. 



Type: type distribution in Brinkmann, Westfalische Pilze, 18. 



Fructifications broadly effused, adnate, thin, somewhat mem- 

 branaceous, small pieces separable when moist, becoming car- 

 tridge-buff to cream-buff in the herbarium, even, becoming some- 

 what cracked, the margin thinning out, pruinose, similar; in 

 section 100-200 tA thick, not colored, composed of suberect, 

 interwoven hyaline hyphae 2-3 ^l in diameter, not incrusted, and 

 of elongated gloeocystidia; gloeocystidia flexuous, tapering to- 

 wards apex, 40-100 X 4J^-9 \l; spores hyaline, even, 4-6 X 2- 

 3 [i, not copious. 



Fructifications 2-8 cm. long, 1-3 cm. wide. 



On bark of decaying Alnus, Acer rubrum, and Carya. In 

 Europe, and from Canada to South Carolina and westward to 

 British Columbia and in Mexico. September to January. Rare. 



C. stramineum may be recognized among our species having 

 gloeocystidia, by its thin, whitish to straw-colored fructification 

 on Acer rubrum. 



Specimens examined: 

 Sweden: L. Romell, 419. 

 Germany: Lengerich, Westphalia, W. Brinkmann, part of type 



from Bresadola. 

 Austria: Tirol, V. Litschauer, 4 specimens from Innsbruck, 



Klosterberg, Stubai, and Volders, respectively. 

 Canada: J. Macoun, 28; Ontario, Ottawa, J. Macoun, 18. 



