A NEW GENUS OF MYXOM YCETES ? 



Thomas H. Macbride 

 (With Plate 36, Containing 7 Figures) 



This following description and accompanying figures are sub- 

 mitted to mycologists partly for the sake of eliciting information. 

 The author has had the material for some years but has been 

 unable in any way, either through the literature at hand or 

 through correspondence, to secure light as to its relationships. 



The specimens look like those of a slime-mould, but the spores 

 have so far refused to grow. If a slime-mould, the species is 

 referable to the family Dianemeae and is akin to those in which 

 the capillitial threads pass from side to side of the fructification, 

 attached at each end. 



The entire structure is set forth more or less diagrammatically 

 in the accompanying plate, the drawings for which are by Miss 

 Irma Uhde. 



Schenella gen. no v. 

 Fructification aethalioid, depressed, flat, covered by a fragile 

 but continuous crust : capillitium of simple threads twisted 

 together to form vertical columns passing from the hypothallus 

 to the outer peridium as if supporting it, but closely arranged; 

 spores abundant, between the columns. 



Schenella simplex sp. nov. 



Fructification white, oval, about 2X4 cm. in extent and 

 about 3 mm. thick : capillitium abundant, dark-brown, exposed 

 by the breaking up of the crust-like peridium, and, when this is 

 removed, having the appearance of a colony of Stemonitis, each 

 column being made up of a number of smooth, tubular, unseg- 

 mented threads twisted together so as to form a cord, and, in 

 some instances, covered in whole or in part by a delicate common 

 sheath : spores spherical, smooth, 5-6 /i. 



Type collected in August, 1903, on a decaying pine log in the 

 Yosemite Valley, California, T. H. Macbride. 



Iowa City, Iowa. 



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