4S8 rU>JGUS-PLOKA. 



; Specimens examined in Phil., Elv. Brit., n. 4, and Moug. 

 & Nest., n. 781. Specimens of Vihrissea Margarita, sent to 

 Kew by the author, ha-ve a]so been carefully examined, and 

 ■proved to be identical in every respect with V. truncorum. 



Vibrissea Guemisaci. Crouan, Ann. Sci. Nat., 1857, 

 t. iv. figs. 24-26; Phil., Brit. Disc, p. 319, pi. x. f. 61. 



Ascophore sessile, at first subglobose and somewhat nar- 

 rowed at the base, then expanding until the disc is slightly 

 convex and more or less distinctly marginate, greyish or 

 with a tinge of orange, rather fleshy, glabrous, flesh- 

 coloured, subgelatinous, 2-3 mm. across ; hypothecium pa- 

 renchymatous, running out at the margin into parallel rows 

 of septate, olive hyphae ; asci long, narrowly cylindrical, 

 6-spored ; spores needle-shaped, very slender, hyaline, apex 

 rounded, base pointed, straight or slightly bent, multi- 

 septate at maturity, almost as long as theascus and arranged 

 in a parallel fascicle, 250-270 x 1 " 5-2 m ; paraphyses slender, 

 septate, often branched near the slightly clavate tips. 

 • Oorgoniceps Guemisaci, Sacc, Sj'U., viii. n. 2082. 



On submerged branches of willow and alder. 



At maturity the disc is covered with the projecting spores, 

 which glisten like the finest floss silk as they wave to 

 and fro. 



Specimen in Elv. Brit., n. 143, examined. 



Var. leptospora. Mass. 

 ■ Disc yellowish ; paraphyses slender, septate, tips broadly 

 pyriform or globose, 6-7 /a across, otherwise as in the type. 



Peziza lejitospora, B. & Br., Ann. Nat. Hist., n. 1166, t. iv. 

 f. 30. 



Vihrissea leptospera, Phil., Brit. Disc, p. 320. 



Gorgoniceps leptospora, Sacc, Syll., viii. n. 2086. 



On decayed wood. 



Patellaria Fergussoni, B. & Br., Ann. Nat. Hist., n. 1490, 

 t. 11, fig. 6. 



Vihrissea Fergussoni, Phil., Brit. Disc, p. 318 ; Sacc, Sjlh, 

 viii. n. 173. 



On branches of Prunus padus. 



Type specimens examined. 



Var. vibrisseoides. Mass. 



Disc yellowish, more or less distinctly bounded by the 



