114 FoRTY-siXTR Report on the State Muse mi. 



gated into a minute liead, globose, .0001 to .00012 in. broad, 

 colored like but paler than the hyphae. 



On a thick stratum of mycelium of some wood inhabiting 

 fungus. Adirondack mountains. July. 



Zygodesmus fulvus Sacc. 



Decaying bark of maple, Acer saccharinum. Lake Pleasant 

 August. 



Cladosporiuin Zeae n. S2x 



Mycelial filaments colorless, branched, creeping among the 

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

 hyphas 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 .0008 in. 

 long, continuous or at length with one to three septa. 



Unripened grains of Indian corn, Zea Mays. Menands. 

 September. 



The species of Cladosporium are generally saprophytes, but 

 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 grajdsh-green or olivaceous velvety 

 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. 



Napicladiuin gramineum 71. sjk 



Spots brown, soon elongated and confluent, often occupying 

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

 crowded, somewhat nodulose above ; spores clavate, having one 

 to three septa, .0012 to .0021 in. long, .0004 to .0005 broad. 



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

 June. 



This fungus is evidently a harmful one. It kills the leaves 

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

 habit and narro\s^er spores. 



