HELYELLA. 461 



Fries says the pileus is variable in colour : brown, bay, 

 violaceous, or blackish. 



Specimen in Thihn., Fung. Austr., n. 11, examined. 



Helvella fusca. Gillet, Disc. France, p, 9, with fig. ; 

 Sacc, Syll., viii. n. 50. 



Pileus composed of 2-3 irregular, crisped, waved, and 

 strongly-reflexed lobes, attached to the stem for some dis- 

 tance by narrow portions, dingy bay or dark ochraceous, 

 margin usually paler; under surface dingy white or greyish, 

 covered with a network of raised veins, about 3 cm. across ; 

 stem 5—6 cm. long, 1 cm. thick, slightly thickened at the 

 base, deeply and irregularly lacunose, dingy white or coloured 

 like the pileus except near the summit; asci cylindrical, 8- 

 spored ; spores 1 -seriate, broadly elliptical or nearly globose, 

 hyaline, with a large oil-globule, 16—17 X 10 ll ; paraphyses 

 slender, septate, apex clavate. 



On the ground among grass, &c. 



With the general build of H. lacunosa, but readily dis- 

 tinguished by the dingy ochraceous brown colour of the 

 pileus, and the strongly-veined under surface. 



** Pileus free from the sides of the stem. 

 j" Stem glabrous or nearly so. 



Helvella subcostata. Cooke, Mycogr., p. 90, fig. 162 ; 

 Phil., Brit. Disc, p. 13. 



Pileus inflated, margin drooping irregularly wavy, spread- 

 ing, centre depressed, free from the sides of the stem, thin, 

 pale dingy yellowish-brown (when dry), 4-5 cm. across, 

 under surface paler, traversed with strong, radiating branch- 

 ing ribs; stem stout, 4—5 cm. long, 1*5 cm. thick, equal 

 throughout, longitudinally ribbed, ribs often branching ; 

 asci cylindrical, apex somewhat truncate, 8-spored ; spores 

 obliquely 1 -seriate, hyaline, continuous, elliptical, ends ob- 

 tuse, 1-guttulate, 17-19 X 10-11 /x ; paraphyses septate, the 

 brown clavate tips 7-8 //, thick. 



On the ground. 



Distinguished by the cylindrical, stout, grooved stem, and 

 the strong, branching ribs on the under surface of the 



