316 BRITISH DISCOMYCETES. 
Genus II.—Visrissea. 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. Soe.” ser. 2; “Botany,” vol. 11, p. 5). (Plate X. 
figs. 60, 61.) 
Name— Vibro, to shake; from the vibrating sporidia. 
ARRANGEMENT OF THE SPECIES. 
A. Stipitate .. a ie as »» species 1-4 
B. Sessile ee es es 3 we » O77 
Key ro THE Species, 
A, STIPITATE, 
Hymenium grey os a < aD «. microscoptca. 
Hymenium orange-vermilion; margin hispid .. Margarita. 
1 
Hymenium golden-yellow or blood-red. ve 
1 Exterior glaucous; stem squamulose wis e. truncorum. 
* (Exterior dark brown, granulose .. oe «» Fergussont. 
B. SESSILE. 
Hymenium pallid, ochraceous, or grey ; externally 
bluish-black ee os dis ate -. Guernisaci. 
Hymenium ochraceous-yellow; margin thin and 
distinct we . a ave a .. turbinata. 
Hymenium pallid or straw-coloured; externally 
lurid .. ee oe Sa a ae «. 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 ln; paraphyses very slender, 
ae 00s slightly enlarged at the summits. (Plate X. 
g. 60. 
Vibrissea truncorwm (A. and S8.)—Fries, “Sys. Myco.,” 
11, p. 31; “Summa Veg. Scan.,” p. 360. Leotia trun- 
