BELONiDimr. 227 



soft, at first subglobose and closed, then plane and usually 

 slightly marginate ; disc whitish, externally horn-colour or 

 tawny, smooth, margin paler, especially when dry ; J-l mm. 

 across; excipulum of interwoven hyphae running out into 

 clavate, septate, brownish parallel ends, the terminal cells 

 forming a parenchymatous cortex of circular or polygonal 

 cells which become smaller upwards, and run out at the 

 margin into parallel, septate, J3ale hyphae ; asci cylindric- 

 clavate, apex narrowed, base rather stout, 8-spored ; spores 

 irregularly 2-seriate, narrowly cylindrical, apex blunt, base 

 acute, hyaline, smooth, 3-septate, rarely 5-septate, straight or 

 very slightly curved, 28-33 X 3—4 jx ; parajdiyses 3-4 f* 

 thick, hyaline, almost cylindrical. 



Peziza (Mollisia) filispora, Cooke, Grev., iii. p. Q6. 



Belonium filisporum, Sacc, Syll., viii. n. 2039. 



On sheaths of various grasses. 



Type specimen examined. 



Belonidium lacustre. Phil., Brit. Disc, p. 149. 



Ascophore sessile, attached b} r a central point, closed at 

 first, then expanding and becoming quite plane, but the 

 margin slightly raised and narrowly incurved when dry; 

 orbicular, rather soft and watery, disc plane or even slightly 

 convex, dingy olive, yellowish-brown when dry, external^- 

 blackish brown, smooth, f-l|mm. across ; cortical cells poly- 

 gonal, brown, 10-12 /x diameter, passing into parallel, septate, 

 paler hyphae at the margin ; asci clavate, 8-spored ; spores 

 2-seriate, elliptic-oblong, hyaline, smooth, 1-3-septate, 

 21-25 X 6-7 [a ; paraphyses cylindrical, about 3 /x thick. 



Peziza lacustris, Fries, Syst. Myc, ii. p. 143. 



Niptera lacustris, Sacc, SylL, viii. n. 2085. 



Peziza scirpi, Rab., Herb. Myc, n. 730; Elv. Brit., n. 183. 



On dead stems of Scirpus, Juncus, Arundo, &c. 



Specimen in Fries', Scler. Suec, n. 173 examined; Cooke, 

 Fung. Brit., ed. ii., n. 655; Phil., Elv. Brit., n. 183; Desm., 

 Cr. Fr., ser. i., 1064, are also identical. 



Spores for a long time continuous, then 1-septate, rarely 

 reaching the 3-septate stage. The excipulum is formed of 

 slender, interwoven hyphae that become clavate, septate, 

 and brown, and are arranged parallel at the periphery, the 

 external cells forming the parenchymatous cortex. 



Q 2 



