HELYELLA. 467 



smooth underneath, about 2 cm. broad ; stem 5-9 cm. high, 

 J- 1 cm. thick at the inflated base ; tapering upwards, elastic, 

 even or often more or less lacunose, coloured like the pileus, 

 minutely velvety or furfuraceous, at first solid, then hollow; 

 excipulum and hypothecium formed of densely interwoven, 

 hyaline hyphae, these pass into large, more or less oblong 

 cells, from the outer ends of which spring 2-4 slender, 

 septate hyphae, these are arranged parallel, and form the 

 outer surface ; asci cylindrical, 8-spored ; spores hyaline, 

 smooth, continuous, elliptical, ends obtuse, often 1-guttulate, 

 18-20 x 10-11 /a; 1 -seriate ; paraphyses septate , clavate. 



On the ground in damp woods, &c. 



Helvetia macropus superficially resembles the present species, 

 but is distinguished by the rough exterior of the ascophore, 

 and the larger spores. 



Helvella macropus. Karsten, Myc. Fenn., p. 37 ; 

 Sacc, Syll., viii. n. 84. 



Ascophore stipitate, subglobose and the margin incurved 

 at first, then expanded, rather thin, 2-5 cm. across, disc 

 brown, externally greyish and miuutely rough with small 

 irregnlar warts formed by the outgrowth of pale brown, 

 somewhat clavate, septate hyphae, constricted more or less 

 at the septa, 8-12 //, thick; stem 3-7 cm. high, up to § cm. 

 thick at the base, thinner upwards, often more or less 

 lacunose, imperfectly hollow with age, greyish, covered 

 with very minutely velvety warts; excipulum of densely 

 interwoven hyphae that become parenchymatous at the 

 cortex; asci cylindrical, 8-spored, spores 1-seriate, smooth, 

 hyaline, elliptical, 28-33 X 11-13 fx; paraphyses straight, 

 tips brownish and thickened in a clavate manner up to 

 8-10 ix. 



Peziza macropus, Pers., Obs., ii. p. 26, t. 1, f. 2. 



Lachnea macropus, Phil., Brit. Disc, p. 207. 



On the ground in shady places. Summer and autumn. 



Solitary, 1-3 inches high, cups 1-2 inches broad. The 

 cups become expanded, and sometimes reflexed ; the exterior 

 is cinereous, and clothed with little hairy or villous warts, 

 i he hairs consisting of oblong concatenate cells, their ex- 

 tremities free. The stem is enlarged downwards, often 

 lacunose, occasionally becoming hollow with age. (Phil.) 



2 h 2 



