464 FUNGUS-FLOKA. 



The entire structure of the present species is that of 

 Helvella, and not of Peziza. 



Helvella pulla. Holinskiold, Atra Fung. Dan., t. 26 ; 

 Cooke, Mycogr., fig. 338; Phil., Brit. Disc, p. 17; Sacc, 

 Syll., Tiii. n. 77. 



Pileus formed of usually two reniform, broadly eniarginate 

 lobes, which are drooping and pressed to the stem — but free 

 from it — afterwards becoming inflated, more or less spread- 

 ing, and wavy, blackish above, smoky and almost glabrous 

 underneath, 2-3 cm. broad; stem 3-6 cm. long, rather 

 slender, narrowed upwards, often irregularly lacunose near 

 the base, nearly glabrous, smok}^ grey, solid at first, then 

 hollow ; hypothecium and exipulum formed of interwoven 

 hyphae, running out into parallel, clavate, septate hyphae 

 to form the cortex ; asci cylindrical, apex somewhat trun- 

 cate, 8-spored; spores obliquely 1 -seriate, hyaline, smooth, 

 continuous, broadly elliptical, ends obtuse, 1-guttulate, 

 15-17 X 12 /x; paraphyses septate, clavate, tinged brown. 



On damp ground in woods, also on rotten trunks. 



Eesembling H. atra, but readily distinguished by the 

 nearly or quite glabrous stem. 



Specimen named by Fries in Herb., Kew, examined. 



\\ Stem densely villose or scurfy. 



Helvella helvelloides. Mass. 



Ascophore stipitate, rather thin, cup- shaped, then ex- 

 panded and plane, the margin at length drooping, blackish- 

 brown; externally rough with minute scurf-like warts, 

 1^—2 cm. across ; excipulum formed of interwoven hyphae 

 which at the periphery run out into clusters of septate 

 hyphae, 8-12 fx thick; stem 2-5 cm. long, 3-4 mm. thick, 

 almost equal and even, scurfy ; asci clavate, 8-spored ; spores 

 1-seriate, elliptical, ends obtuse, smooth, hyaline, 18-20 x 

 9-10 /a, with a hyaline thick wall; paraphyses clavate, tip 

 6-8 /a broad. 



Helvella pezizoides, Afzel., Yet. Acad. Handl., 1873, p. 308, 

 t. 10, f. 2; Sacc, Syll., viii. n. 82. 



Peziza helvelloides, Fr., Summa Yeg. Scand., p. 348; Cooke, 

 Mycogr., fig. 190 



Lachnea helvelloides, Phil., Brit. Disc, p. 206. 



