172 BRITISH DISCOMYCETES. 



Subgenus I. — Niptera. Fckl. (in part). 



Cup sessile, concave or plane, soft or waxy, glabrous 

 or granulose ; sporidia ovate or fusiform, simple, some- 

 times 1-septate. (Plate VI. fig. 32.) 



Name — Niptrum, a basin ; from the shape. 



Arrangement of the Species. 



Key to the Species. 



Hymenium yellow . . . . • • . . . . 1 



Hyrnenium grey . . . . . . . . . . 2 



Hymenium pallid . . . . . . . . . . 3 



, ("Externally ochery-yellow . . . . . . . . Teucrii. 



{Externally umber-brown . . . . . . . . discolor. 



Externally watery cinereous . . .. .. .. benesueda. 



Externally greenish-brown . . . . . . . . aquosa. 



Externally cinereous or livid ; margin paler than 



2. \ disc . . . . . . • • • • • . • • cinerea." 



Externally rufous ; margin fimbriate .. .. urticicola. 



Externally brownish-black . . . . . . . . joXlax. 



.Externally black . . . . . . . . . . 4 



o /Exterior pallid: on Arundo .. .. .. .. arundinacea. 



{Exterior pallid : on Peltigera canina . . . . epithallina. 



. /Margin fimbriate . . . . . . . . . . cyanites. 



{Margin entire • . . . . . . . . . atro-cinerea. 



A. SPORIDIA OVATE, APICULATE. 



1. Mollisia aquosa. (B. and Br.) 



Cup at first closed, then expanded, plane, or slightly- 

 concave, greenish-brown, smooth ; hymenium watery 

 grey; sporidia biseriate, ovate, apiculate, 5 — 6 X 2*5 — 



Peziza (Mollisia) aquosa — B. and Br. in " Ann. Nat. 

 Hist.," No. 1326, t. xx. f. 19 ; "Grevillea," i. p. 130. 

 On or with Sphceria hirsuta, on willow. January. 

 Resembling P. cinerea, but smoother and more con- 



