Report of the Botanist. 47 



Helotium albopunctum PJc. 



Cups very minute, scattered, white, the disk soon plane or slightly concave, 

 margin generally distinct ; asci cylindrical ; spores biseriate, oblong, narrow, 

 generally binucleate, .0006-.0007' long. 



Fallen beech leaves in woods. Adirondack Mountains. Aug. 



This is an exceedingly minute species. In drying it acquires a yellowish 

 tinge, and it is then scarcely visible to the naked eye. The stem is so short 

 that the plant appears sessile. 



H.EMATOMYCES ORBICULARIS PJc. 



About one line in diameter, sessile, pulvinate, orbicular, subtremelloid, 

 gy rose-con volute, blackish-brown, minutely dotted with rufous particles, as is 

 also the moist pallid or subrufous spot on which it is seated ; asci narrowly 

 clavate, subacute; spores oblong-fusiform, simple, .0006-.0007' long, .00015' 

 broad ; paraphyses numerous, filiform. 



Decaying chestnut wood. Mechanicville. Oct. 



T have seen no description of this genus, and refer our specimens to it, 

 because of their congeneric relation to Hcematoruyces vinosus C. & E. 



Derm ate a carnea C. & E. 



Dead Viburnum stems. West Albany. Oct. 



Dermatea phyllophila PJc. 



Cups minute, suborbicular, often with a flexuous margin, dry, somewhat fib- 

 rous in texture, brownish and slightly hairy externally, erumpent, surrounded 

 and partly concealed by the ruptured epidermis, sometimes throwing off a 

 fragment of it, when moist, expanded and revealing a plane pallid or dingy- 

 white disk ; asci oblong-clavate, obtuse, sessile ; spores broadly elliptical, 

 nearly colorless, .0003'-.00035' long, .0002'-.00025' broad, generally con- 

 taining a large shining nucleus ; paraphyses thickened above, often a little 

 longer than the asci. 



Lower surface of balsam leaves while yet on the tree. Summit. Sept. 



At first sight this fungus might be taken for some effete Peridermium, such 

 is its general external appearance. When moist the cups are swollen and 

 become more distinct. Under a lens the disk has a pruinose appearance. 

 The leaves that are attacked are killed by the fungus, all those bearing it 

 being dead, though in the immediate vicinity of living ones. 



Dermatea Xanthoxyli Pk. 



Cups densely tufted, minute, often irregular fromjmutual compression, 

 brownish-lilac, externally and on the margin whitish with a villose pruinosity, 

 disk plane or slightly concave ; asci short, clavate ; spores crowded, simple, 

 slightly curved, subcylindrical, obtuse, colorless. 



Dead branches of prickly ash, Xanthoxylum Americanum. West Troy. 

 Oct. 



The tufts are scarcely a line broad and easily overlooked, yet they some- 

 times contain a dozen cups each. 



