By C, E. Broome, Esq. 



233 



Genus CCCXIY., Microsphoera Lev. Mycelium arachnoid. Ap- 

 pendages straight, dichotomous. Branchlets swelling at the tip, 

 or filiform. 



Genus CCOXV., Ertjsiphe Hedw. Mycelium arachnoid. Ap- 

 pendages floccose, simple, or irregularly branched. 



Erysiphe tortilis Lk., on leaves of cornel. 

 * communis Schlecht, on leaves common. 



Genus CCCXVL, Chcetonium Kze. Perithecium thin, brittle, 

 mouthless. Asci linear, containing dark, lemon-shaped sporidia. 



Choetonium elatum Kze., Rudlow, on rotten straw. 



Genus CCCXVIL, Ascotricha B. Perithecium thin, free, mouth- 

 less, seated on loose, branched, conidiiferous threads. Asci linear, 

 containing dark, elliptic sporidia. 



Genus CCCXVIIL, Eurotium Lk. Perithecia reticulated, vesi- 

 cular, coloured, attached to mucedinous threads. Asci delicate. 



Eurotium herbariorum Lk., on sedges, Spye Park. 



ORDER XXVIII. ONYGENEI. 



Genus CCCXIX., Onygena P. Parasitic on animal substances. 

 Peridium stipitate or sessile, paper-like, at length splitting. Asci 

 delicate. Sporidia at length forming a dusty mass. 



Onygena equina P., Lucknam Grove, on dung. 



Family VI. Physomycetes. 

 Threads free, or only slightly felted, bearing vesicles, which con- 

 tain indefinite sporidia. Syzygites is a very curious genus, which 

 conjugates, and forms sporangia as with some algse. And endo- 

 gone is a subterranean genus, whose fruit is not yet well under- 

 stood. 



Threads black, more or less felted, moniliform and equal 

 in the same felt, bearing here and there irregular 

 sporangia. 



Threads free, bearing terminal or lateral sporangia. 



y2 



