432 FUNGUS-FLOBA. 



which, radiate from the base; excipulum pseTicIoparenchy- 

 matoTis, cells largest at the periphery, where some run out 

 as clavate, free tips ; asci cylindrical, 8-spored ; spores 

 obliquely 1-seriate, smooth, hyaline, often with 1 large oil- 

 globule, elliptical, ends obtuse, wall rather thick, 18-24 X 

 11-13 /J,; paraphyses septate, tips clavate, brownish. 



Discina venosa, Sacc, SylL, viii. n. 391. 



On the ground. Spring. 



Cup 1-2 inches broad or more, nearly as high. The 

 strong nitrous odour of this species is very characteristic. 

 Differs from Acetahula vulgaris in the short, indistinct stem 

 and wavy ascophore. 



Specimen in Cooke, Fung. Brit., n. 557, examined ; also 

 Eehm, Ascom., n. 402. 



■ff Disc pale coloured. 



Peziza ampliata. Pers., Ic. et Descr., p. 30, t. 8, f. 3 ; 

 Phil., Brit. Disc, p. 78; Cooke, Mycogr., fig. 364; Sacc, 

 Syll., viii. n. 342. 



Ascophore sessile or substipitate, fleshy, brittle, thin, at 

 first globose and closed, soon expanding and becoming almost 

 or .quite plane, surface or margin often wavy, 2-4 cm. across 

 when expanded ; disc ochraceous, often with a cinnamon 

 tinge, externally pallid, minutely furfuraceous or almost 

 smooth; excipulum parenchymatous, composed of alternat- 

 ing zones of large and small cells ; asci cylindrical, apex 

 somewhat truncate, 8-spored; spores obliquely 1-seriate, 

 elliptical, ends obtuse, wall rather thick, hyaline, continuous, 

 17-18 X 9-10 /*; paraphyses septate, slightly thickened, and 

 sometimes bent at the tips. 



On rotting wood and bark of various trees. Autumn and 

 winter. 



Distinguished by the pale colour, brittle texture, becom- 

 ing plane at maturity, and by the peculiar stratose structure 

 of the excipulum. 



Specimens in Herb., Kew, determined by Cooke, examined ; 

 also specimens sent from France by M. Boudier, and figured 

 by Cooke in Mycographia, fig. 384. 



Var. tectoria. Mass. 



Sessile or substipitate, becoming almost plane; cortical 



