SPHAERELLA 



193 



which should consequently be cleared out and spread over 

 grass land. If in a house, after the soil has been removed, 

 every part of the structure should be thoroughly drenched 

 with a solution of sulphate of copper one pound to fifteen 



FIG. 51. Hypomyces perniciosus. i, mushrooms 

 deformed by the fungus, half nat. size ; 2, conidia 

 of the fungus, highly mag. 



gallons of water; this should be repeated twice at an 

 interval of about three weeks. 



Journ. Bd. Agric. Leaflet, No. 139. 

 Magnus, Verh. Ges. Deutsch. nat. u. Aerzte, 60, p. 246. 

 Stapf, Verh. zool.-bot. Gesell., 39. p. 617. 



SPHAERELLA (Css. and DE NOT.) 



Perithecia membranaceous, subglobose or depressed, 

 covered by the epidermis or bursting through ; asci 8-spored ; 

 spores elongated, i-septate, hyaline; paraphyses absent. 



N 



