A New Irish Ftcngiis, 277 



described it comes nearest to a species from Ce34on called 

 Perico7iia vionilifera by Messrs. Berkeley and Broome, but re- 

 moved to Stysanus by Saccardo. Their description, as 

 repeated by Saccardo, is not very complete, but our specimen 

 differs in the stalk not being rough (scabrous). To sum up, 

 Mr. Massee, to whom I sent the specimen, and who is the 

 leading English authority on the subject, has no hesitation in 

 declaring the species to be new, and it has accordingly de- 

 volved on me to confer upon it a name. I have accordingly 

 called it 5*. UlmaricB, indicating thereby its habitat on Meadow- 

 sweet, SpircBa Uhnaria, and have drawn up the following 

 technical description : — 



Stysanus Ulmarlae, McWeeney, nov. sp. 



Stem from -25 to i m.m. high, composed of loosely-com- 

 pacted, septate, brown hyphae which, passing upwards, 

 undergo repeated dichotomous division and oj^en out to form 

 a globose head. Terminal branches paler, divided b}^ rigid, 

 thick, projecting septa into moniliform chains of cubical 

 elements which fall off and constitute the spores. Spores 

 pale-brown, cubical, barrel-shaped or subglobose, 5-6 /i. in 

 diameter. 



On dying Meadow-sweet {Spircea Uhnaria), Braganstown 

 Bog, Co. Louth, Ireland, August loth, 1895. 



EXPI^ANATION OF PI<ATE 5- 



1. Natural size of object. 



2. The same, magnified about 150 diameters (somewhat diagrammatic). 



3. An isolated spore-bearing hypha, magnified 400 diameters. 



4. 5, and 6 Small portions of the fructification isolated to show the 

 different forms assumed, magnified 300 diameters. 



