269 
of the cup. I obtained from Mr. Keith some specimens less advanced in growth, 
and Dr. Cooke has kindly lent me his less advanced specimens; from the 
examination of these I was enabled to detect beneath the undulating surface of 
the stroma small cavities, each indicated by a slight tuberculate elevation of the 
surface, containing a layer of upright slender filaments bearing on their apices very 
minute spherical bodies. Of the true nature of these bodies I am at present 
ignorant, and simply content myself with indicating their existence. 
The question that now presents itself is to what genus can we refer this fungus 
in the more perfect form it is now found to assume? Clearly not to Rhytisma ; 
for the perithecia in that genus open by flexuous fissures, and never assume a 
peziza-like form. Fries describes a genus which he names £phelis in his ‘‘ Summa 
Vegetabilium Scandinavie” p. 370, immediately preceding his genus Rhytisma, 
exactly agreeing with our plant, in the following words “‘ Perithecium (stroma) 
crustaceo-effusum, hinc inde tuberculosum, tuberculis in excipula cuplaria 
dehiscentibus.” (The perithecium, or stroma, forming an effused crust, here and 
there tuberculose, the tubercles bursting out at length into cup-shaped excipula). 
To this genus I propose to remove it under the name of Ephelis Keithit. 
