106 FUNGUS-FLORA. 



Patellaria crataegi. Phil., Grev., vol. xvii. p. 46; 

 Sacc, Syll., viii. n. 3276. 



Caespitose or scattered, erumpent, subglobose then patel- 

 late, fixed by a central point, orbicular or the distinct margin 

 sometimes more or less wavy, 1—1 ■ 5 mm. across ; disc black, 

 externally blackish-brown ; excipulum white, composed of 

 radiating, parallel, closely packed hyphae that become thick- 

 ened, septate, and dark olive towards the surface ; asci nar- 

 rowly clavate, apex narrowed, base contracted into a slender 

 pedicel, 8-spored ; spores narrowly fusoid, the broadest part 

 sometimes above the middle, multi-guttulate, then 3-5-sep- 

 tate, hyaline, 35-60 X 4*5-6 fx; paraphyses slender and 

 hyaline below, becoming, wider, septate, often more or less 

 swollen at the septa, and brownish olive at the tips ; passing 

 gradually into the structure of the excipulum. 



On twigs of hawthorn and blackthorn. 



The specimens on which Phillips founded the species do 

 not appear to have been quite mature. In a batch forwarded 

 to Kew for identification by Lars Komell, from Sweden, some 

 of the ascophores are exactly in the condition described by 

 Phillips, while others show the spores 3-5-septate. Phillips 

 describes the spores as " faintly coloured," this was not 

 observed. 



Patellaria minutissima. Phil., Brit. Disc, p. 362. 



Gregarious or scattered, about J mm. across, sessile, ex- 

 panded when moist, compressed and somewhat contracted in 

 the matrix when dry; margin entire, incurved; disc sooty- 

 brown, externally blackish-brown ; asci clavate or cylindric- 

 clavate, 8-spored ; spores elliptical, hyaline, 2-3-guttulate, at 

 length 3-septate, 6x3 ^ paraphyses filiform, slightly 

 thickened at the bent tips. 



Lecanidion minutissimum, Sacc, Syll., viii. n. 3278. 



On decayed wood. 



Patellaria lecideola. Karst., Myc. Fenn., p. 234, 

 Phil., Brit. Disc, p. 364 ; Eehm, Krypt.-Flor., Disc, 

 p. 330. 



Gregarious on a greyish spot, almost clavate and closed at 

 first, then expanding, sessile, concave, horny, externally 

 blackish-brown, disc black up to J mm. diameter; excipulum 



