n 



1G BRITISH DISCOMYCETES. 



Genus II. — Vibrissea. Fries (amended). 



Aquatic fungi (except rimarum), bearing the exposed 

 hymenium on a plane or cup-shaped membranaceous 

 receptacle, stipitate or sessile, fleshy, firm, ejecting from 

 the asci "slender elongated sporidia, which often remain 

 attached by their extremities to the surface of the 

 hymenium, giving it a velvety appearance (" Trans. 

 Linn. Soc," ser. 2; "Botany/' vol. 11, p. 5). (Plate X. 

 figs. 60, 61.) 



Name — Vibro, to shake; from the vibrating sporidia. 



b. Sessile . . . . . . . . . . „ 5-7 



Arrangement of the Species 

 a. Stipitate . . . . . . . . . . species 1-4 



Key to the Species. 

 a. stipitate. 

 Hymenium grey 



Hymenium orange- vermilion ; margin hispid 

 Hymenium golden-yellow or blood-red 

 , ("Exterior glaucous; stem squamulose .. 



' \ Exterior dark brown, granulose . . . • 



vmcroscoptca. 



Margarita. 



1 



truncorum. 



Ftrgussoni. 



b. sessile. 



Hymenium pallid, ochraceous, or grey ; externally 



bluish-black . . . . . . . . . . Guernisaci. 



Hymenium ochraceous-yellow ; margin thin and 



distinct turbinata- 



Hymenium pallid or straw-coloured ; externally 



lurid . . . . . . . . . . . . . . leptospora. 



A. STIPITATE. 



1. Vibrissea truncorum. (A. and S.) 



Fasciculate, gregarious or scattered ; hymenium 

 convex, golden-yellow or blood-red, forming, with the 

 membranaceous receptacle, an orbicular head ; stem terete, 

 glaucous, squamulose ; asci cylindrical; sporidia 8, fili- 

 form, multiseptate, 250 X 1/m ; paraphyses very slender, 

 branched, slightly enlarged at the summits. (Plate X. 



Vibrissea truncorum (A. and S.) — Fries, "Sys. Myco.," 

 11, p. 31; "Summa Veg. Scan.," p. 360. Leotia trun- 



