HELVELLA. 463 



panded, thin, somewhat leathery, 1|-2J cm. across; disc 

 umber-brown, externally greyish and minutely flocculose, 

 stem firm, almost equal, base more or less bulbous, even or 

 slightly laounose, 12 cm. long, 23 mm. thick ; hypotheciuin 

 and excipulum formed of interwoven hyphae, which run out 

 into parallel, clavate, septate ends to form the cortex; asci 

 cylindrical, apex truncate, 8-spored; spores 1-seriate, hya- 

 line, continuous, smooth, broadly elliptical, with a large, 

 central oil-globule, 15-17 X 10-11 /*; paraphyses slender, 

 septate, the slightly clavate tips brownish. 



Octospora bulbosa, Hedw., Muse. Frond., t. x. fig. c. 



Peziza bulbosa, Nees, Syst., f. 289 ; Cke., Mycogr., fig. 189. 



Lachnea bulbosa, Phil., Brit. Disc., p. 205. 



Macropodia bulbosa, Sacc., Syll., viii. n. 638. 



On the ground. 



Specimen in Eab., Fung. Eur., n. 1308, examined. 



The present species approaches the Pezizae in having the 

 ascophore globose and closed when young ; but the general 

 build and the structure of the ascophore is much more in 

 agreement with Helvetia than with any genus included in 

 the Pezizae. 



Helvella corium. Mass. 



Ascophore stipitate, somewhat waxy, rather coriaceous 

 when dry ; saucer-shaped then more expanded, sometimes 

 compressed laterally, 15 cm. across ; disc black with a 

 tinge of brown, externally paler and minutely velvety ; 

 excipulum white, composed of interwoven hyphae which 

 run out into free, clustered, septate brownish hairs, 3040 x 

 8-12 /x; stem 1-3 cm. long, 4-5 mm. thick at base, usually 

 thinner upwards, glabrous, grooved or wrinkled, brown, 

 base usually paler ; asci cylindrical, 8-spored, spores 

 obliquely 1-seriate, smooth, hyaline, usually 1-guttulate, 

 elliptical, ends very obtuse, 18-20 x 10 p.; paraphyses 

 clavate, apex brown and often rather constricted at the 

 uppermost septum, giving the tip a moniliform appearance. 



Peziza corium, Web., Pilze, t. iii., fig. 7 ; Cooke, Mycogr., 

 fig. 187. 



Lachnea corium, Phil., Brit. Due., p. 204. 



Macropodia corium, Sacc., Syll., viii. n. 639. 



On sandy ground. Spring. 



