46 



DISCOMYCETES. 



Cup 1J inches broad; stem 1 to 1J inches long, J 

 inch and more thick, terminated by a few rooting fibrils ; 

 sporidia immature, according to Berkeley, 25 X 12/m, 

 apparently elliptical, larger than in P. ciborium ; the 

 asci are considerably larger, and of a different character 

 (Cooke). 



On the ground (Mr. H. C. Spencer Perceval in Herb. 

 Berk.). On a lawn under lime-trees, Glamis Castle 

 (Rev. J. Stevenson). 



SUBGENUS II. TAUZETTA. Cooke. 



Cup nearly entire, naked, stipitate ; stem slender, 

 varying in length, erect or rooting. (Plate III. fig. 12.) 

 Name (?) Tazzetta (Ital.), a little cup. 



ARRANGEMENT OP THE SPECIES. 



A. Stem erect. 



(a) Sporidia elliptic, rough 

 (ft) Sporidia elliptic, smooth 



B. Stem rooting. 



(a) Sporidia elliptic, smooth 



KEY TO THE SPECIES. 



Stem erect. . . . 



Stem rooting 



Margin lobed ; sporidia rough . . 



Margin entire ; sporidia smooth 



Margin crenulate 



species 4 

 5-7 



8-10 



o JFawn colour, farinose . . 

 ' (Flesh colour, glabrous . . 



3. 



Cup turbinate; flesh thick, very fragile 

 Cup becoming plane or deflexed ; flesh i 

 Cup always concave, flesh thin, fragile ; stem shorter 

 than two preceding . . 



carbonaria. 



A. STEM ERECT. 



(a) Sporidia elliptic, rough. 



4. Peziza petaloidea (nov. sp.). Cooke and Phil. 



Cup expanded, lobate, fleshy, firm ; hymenium rugose, 

 sub-umbilicate, yellowish brown, margin deflexed ; stem 

 rather slender, enlarged upwards into the rugose base of 

 the cup ; externally verrucose, fuliginous brown ; asci 



