226 FUNGUS-FLORA. 



parenchymatous, cortical cells polygonal, 9-11 /* diameter, 

 brown, passing into parallel, septate, pale hairs of various 

 lengths to form the irregular margin; asci clavate, apex 

 narrowed, 8-spored; spores irregularly 2-seriate, narrowly 

 linear-lanceolate, hyaline, smooth, 2-3 septate, 35-40 x 5 p. ; 

 paraphyses 3-4 /x thick, hyaline, scarcely thickened at the 

 summit. 



Peziza Arctii, Phil., in Bucknall's Fungi of Bristol, n. 999, 

 fig. 5. 



Mollisia Arctii, Phil., Brit. Disc., p. 183. 



Belonium Arctii, Sacc., Syll., n. 2044. 



On dead stems of Arctium lappa. 



Authentic specimen from Philliy s examined ; also Yize, 

 Micro. Fung. Brit., n. 476 (called Peziza Arctii, B. & Br.).j 



Belonidium pruinosum. Mass. 



Ascophores gregarious, sessile on a broad base, often sur- 

 rounded by more or less evident white hyphae, plane from 

 the first, circular and discoid when isolated, often confluent 

 and forming irregular patches, ?,-| mm. across, chalky white 

 at first, the disc finally becoming densely mealy or pruinose 

 under a lens; hypotheciuin parenchymatous, cells minute; 

 asci clavate, narrowed below into a long, slender, usually 

 crooked pedicel, 8-spored ; spores irregularly 2-seriate, 

 hyaline, narrowly elliptical, ends narrowed, often curved, 

 continuous for some time, finally 2-3 septate, 21-25 X 4-5 /u; 

 paraphyses hyaline, very slender, often irregularly branched, 

 tips not thickened. 



Helotium pruinosum, Jerdon, Ann. Nat, Hist., ser. iii., 

 vol. xviii. p. 13, pi. 5, fig. 33 (1866); Phil., Brit. Disc., 

 p. 165. 



On Hypoxylon fuscum and Diatrype stigma, also on dead 

 wood and bark. 



Jerdon's type in Herb. Kew, examined. 



Eeadily distinguished by the pruinose disc, and the large, 

 septate spores. 



* On Monocotyledons. 



Belonidium filisporum. Phil., Brit. Disc., p. 152. 

 Scattered or fcubgregarious, sessile, innate, rather fleshy, 



