HYMENOSCYPHA. 115 



B. SPORIDIA CYMBIFORM. 



3. Hymenoscypha sclerotiorum. (Lib.) 



Cup infundibuliform, becoming plane or convex, pale 

 brown, rather firm, glabrous, margin entire ; stein slender, 

 more or less elongated, flexuous, of the same colour, arising 

 from a black sclerotium; asci cylindraceo-clavate ; sporidia 

 8, broadly elliptic, sometimes unequal-sided, biguttulate, 

 9 13 X 5/z ; paraphyses filiform, more or less enlarged 

 upwards. 



Peziza sclerotiorum Lib., exs. 326; Brefeld, "Schim.," 

 heft. iv. c. i. ; Cooke, " Grevillea," xii. p. 44. P. Sclerotii 

 Fckl, " Bot. Ztg.," 1861, No. 35, with figure. Sderotinia 

 Libertiana Fckl., " Symb. Myco.," p. 331. Peziza pos- 

 tuma Berk, and Wilson, Gard. Chron., Sept., 1883. 

 Smith's " Diseases," p. 15, with figures. Phialea sclero- 

 tiorum Gill., " Champ.," p. 98, c. i. (sporidia bad). 



Exs. Lib., "Crypt. Ard.," 326 ; Fckl., F. Rh.," 1861. 



On Sclerotium compact a in on Brassica napus, and 

 S. varium on potato-stalks. 



Cup J to 2 lines broad ; stem veiy variable in length 

 according to the conditions under which it grows. 



On Sclerotium compete! um in Herb. Berk. 



Name Sclerotium, a tuberous fungus. 



Artificially cultivated on S. varium by Mr. Wilson ! 



4. Hymenoscypha Duriceana. (Tul.) 



Cup cyathiform, then expanded, at length nearly 

 plane, glabrous, thin, succulent, fragile, pale brown ; stem 

 arising from a sclerotium, firm, cylindrical, straight or 

 flexuous, brown, blackish near the slightly hirsute base ; 

 asci cylindrical ; sporidia 8, cymbiform, ends obtuse, 

 10 15 X 6/z; paraphyses filiform, stout, disappearing 

 when old. 



Peziza Duriceana Tul., " Select. Fung. Carp.," i. 

 p. 103, and iii. pp. 200, 203, t. 22, f. 20-2 -k 



Exs. Rehm, " Asco.," No. 603; Winter, "Fungi 

 Eur," 2749. 



