150 BRITISH DISCOMYCETES. 



Peziza lacustris — Fries, " Sys. Myco.," ii. p. 143; Nyl., 

 " Pez. Fenn.," p. 62 ; Cooke, " Handbk.," No. 2101. Nip- 

 tera lacustris — Fries, " Summa Veg. Scan.," p. 359 ; De 

 Not. in " Coinm. Soc. Critt. Ital.," 5, 1863, p. 375 ; non 

 Fckl., " Symb. Myco.," p. 292 ; nee Curr., " Linn. Trans.," 

 vol. 25, p. 153. Patellaria aquatica — Curr., " Linn. 

 Trans.," vol. 25, p. 155, t. 25, f. 23; "Scott. Nat.," vi. 163. 

 Mollisia lacustris — Gill., " Champ.," p. 130. 



Exs.— Fries, " Scl. Suec," No. 173; Rabh., "Fung. 

 Eur.," No. 231. 



On culms of Scirpus, Arundo, etc. 

 When young adnate, plano-convex, J a line broad, 

 even, smooth, black, then dilated, plane, free beneath 

 except the central point of adhesion, externally sooty 

 black, quite black when dry ; margin at first connivent, 

 then open, inflexed, entire ; disc turgid, soft, when moist 

 dingy, when dry black (Fries, I. c). 



After comparing the original specimen of Patellaria 

 aquatica (Curr.) with an original specimen of Fries, " Scl. 

 Suec," No. 173, in the Kew Herbarium, there can be no 

 possible doubt of their identity. 



Name — Lacus, a lake ; from the habitat. 

 St. George's Hill, Weybridge ! and Paul's Cray 

 Common (Mr. F. Currey). 



(b) Sporidia fusiform. 



4. Belonidium excelsius. (Karst.) 



Cups gregarious, convex, livid or cinereous white, or 

 pallid ; when dry concave, the same colour or becoming 

 blackish ; hymenium whitish or pallid ; asci fusiform- 

 clavate ; sporidia 8, elongate -fusiform, ends sub-acute, 

 multiguttulate, becoming multiseptate, 50 — 6o X 4 — 5/z; 

 paraphyses filiform, branched. 



Peziza excelsior — Karst., "Mon. Pez.," p. 165. Mollisea 

 excelsior — Karst., "Myco. Fenn.," p. 199; "Grevillea," 

 viii. p. 102; Steven., "Myco. Scot.," p. 326. 



On dead culms of Arundo. August. 



Cup £ to h a line broad. This has a pseudo- 



