342 FUNGUS-FLORA. 



* Disc orange or yelloiv. 



Dasyscypha calycina, Fckl., Symb. Myc., p. 305. 



Ascophores caespitose, gregarious, or scattered, narrowed 

 into a short, stout, stem-like base, rather fleshy, 13 mm. 

 broad ; disc orange-yellow, externally white and villose 

 hairs rather wavy, cylindrical, obtuse, colourless, minutely 

 rough, 100 150 X 4-5 /u, ; asci subcylindrical, apex obtuse, 

 8-spored ; spores 1-seriate or inclined to be 2-seriate above, 

 hyaline, elliptic-fusiform, continuous, 18-25 x 6-8 /A; para- 

 physes slender, hyaline, cylindrical. 



Peziza calycina, Schum., Enum. PL, Saell., ii. p. 424 (in 

 part). 



Peziza Wilkommii, Hartig, Willkomm, Mikr. Feinde d. 

 Waldes, ii. p. 167. 



Lachnella calycina, Phil., Brit. Disc., p. 241. 



On bark of larch and Scotch fir. 



Hypothecium and excipulum formed of slender, branched 

 hyphae about 2-3 //, thick ; these become more or less parallel 

 to form the cortex, and finally run out into the external 

 hairs. This fungus is very destructive to young larch- trees. 

 For distinctions from allied species, see note under D. 

 abietis. 



Specimens examined in Fuckel, Fung. Rhen., n. 1206, and 

 Cooke, Fung. Brit., n. 474. 



Var. Trevelyani, Cooke, Grev., iii. p. 101; Phil., Biif. 

 Disc., p. 242. 



Distinguished from the type form by the larger spores, 

 3035 yu. long, and by their tendency to become pseudo- 

 uniseptate. 



On larch. 



Dasyscypha subtilissima, Sacc., Syll., viii. n. 1823. 

 Gregarious or scattered, narrowed into a stout, short, stem- 

 like base, globose and closed at first, then expanded. 1-2 mm. 

 broad ; disc orange-yellow, externally white and villose, hairs 

 more or less wavy, cylindrical, obtuse, thin-walled, minutely 

 rough, colourless, 80-120 X 3-4 p.; asci narrowly cylindric- 

 clavate, 8-spored ; spores hyaline, continuous, straight, ellip- 



