HELVELLA. 467 



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

 | | 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 p.; 1-seriate ; paraphyses septate, clavate. 



On the ground in damp woods, &c. 



Helvella 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 minutely rough with small 

 irregular 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 f 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 /A; paraphyses straight, 

 tips brownish and thickened in a clavate manner up to 

 8-10 /*. 



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



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



On the ground in shady places. Summer and autumn. 



Solitary, 13 inches high, cups 1-2 inches broad. The 

 cups become expanded, arid sometimes reflexed ; the exterior 

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

 the 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 



