IVol. 13 

 276 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



loosely arranged near the substratum, suberect, incrusted, 4J^ \i 

 in diameter under the incrustation and up to 6 ;jl over it, not 

 incrusted and more densely arranged towards the hymenium; 

 gloeocystidia in the form of brown or ochraceous, resinous, 

 spherical or somewhat angular masses 9-20 \i in diameter; spores 

 white in a spore collection, even, cylindric, somewhat curved, 



8x2J/ 2 ^. 



Fructifications 2-6 cm. long, 5 mm.-3 cm. wide. 



On decorticated, very rotten logs of Populus trichocarpa. 

 Idaho. September. 



The specific name ochrofarctum has reference to the colored, 

 resinous gloeocystidia which are so large and so deep colored that 

 they may be seen by inspection of the fructification with a lens 

 and give, when so viewed, a minutely speckled appearance to the 

 fructification. The large, coarsely incrusted hyphae are dis- 

 tinctive also. C. coroniferum is a related European species. 



Specimens examined: 

 Idaho: Coolin, J. R. Weir, 11120, type, and 11122 (in Mo. Bot. 



Gard. Herb., 63695 and 63696 respectively). 



86. C. Tsugae Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb. 



Fructifications effused, thin, dry, hypochnoid, downy, avel- 

 laneous, with the surface white-pruinose, even, not cracked, the 

 margin similar, indeterminate; in section 30 \l thick, not colored, 

 composed of hyphae and numerous colored gloeocystidia; hyphae 

 hyaline, thin-walled, 3 ^ in diameter, not incrusted, not nodose- 

 septate, ascending from the substratum; gloeocystidia in the 

 form of brown or ochraceous, resinous-appearing, subspherical 

 masses up to 18 \l in diameter; not more than 4 sterigmata to a 

 basidium demonstrated; spores hyaline, even, 6-73^ X 3-3^ n, 

 copious. 



Fructifications in fragments up to 2% cm. long, 13^ cm. wide. 



On very rotten wood of Tsuga canadensis. New Hampshire. 

 September. 



The color of the fructification of this species is so nearly that of 

 the rotten substratum that close inspection is necessary to detect 

 the presence of the fungus, whose color is probably due to the 



