34 Report of the State Botanist. 



gated into a minute head, globose, .UOUl to .00012 in. broad, 

 colored like but paler than the liyphse. 



On a thick stratum of mycelium of some wood inhabiting 

 fungus. Adirondack mountains. July. 



Zygodesmus fulvus Sacc. 



Decaying bark of maple, Acer saccharinu7i%. Lake Pleasant 

 August. 



Cladospormm Zese n. sp. 



Mycelial filaments colorless, branched, ci'eepi^- among the 

 tissues of the matrix and causing the epidermis to rjipture ; fertile 

 hyphae slender, sparingly septate, more or less elongate ; densely 

 interwoven and forming a grayish-green velvety stratum ; spores 

 very variable, globose elliptical or oblong, .00016 to -.^008 in. 

 long, continuous ^r at length with one to three septa. ./*;^ 



Unripened grains of Indian corn, Zea Mays. lienp,nds. 

 September. ' . i^ 



The species of Cladosporium are generally saprophytes, J)\\t 

 this one appears to attack the living tissues of the grain. The 

 kernel ruptures at the apex, revealing its white starchy contents,^ 

 which are soon overspread by a gra^^^ish-green or olivaceous velvefr^^ 

 coating of filaments which give a moldy appearance to the exposed 

 surface. The rupture widens and the contents gradually dis- ^ 

 appear till the grain is deeply excavated. The fungus is a peculiar 

 and apparently an injurious one. •^"•' 



Napicladium gramineum n. sp. 



Spots brown, soon elongated and confluent, often occupying 

 the whole leaf ; tufts minute, punctiform, black, the hyphaB short, 

 croAvded, somewhat nodulose above ; spores clavate, having one 

 to three septa, .0012 to .0024 in. long, .0004 to .0005 broad. 



Living leaves of rough meadow grass, Poa trimalis. Delmar. 

 June. 



This fungus is evidentl}^ a harmful one. It kills the leaves 

 attacked by it. It differs from W. arundinaceum in its punctiform 

 habit and narrower spores. 



