VIBRISSEA. 819 
4. Vibrissea microscopica. B. and Br. 
Very minute, plane or cup-shaped; hymenium and 
receptacle grey; stipes short, slender, black ; asci clavate ; 
sporidia 8, filiform ; paraphyses filiform numerous. 
Vibrissea microscopica—B. and Br., “Ann. Nat. 
Hist.,” No. 1618; “ Grevillea,” v. p. 59; Phil in “ Trans. 
Linn. Soe.,” ser. 2, vol. ii. p. 7, t. i. f. 17-24. 
On damp fir-wood. 
Scarcely visible without a lens) Stem very short, 
black ; head grey, leaving a cup-shaped depression when 
completely washed off; sporidia ejected, filiform (Berk. 
and Broome, l. ¢.). 
The receptacle is 200u broad; the whole plant 200u 
high ; sporidia 50—60 x 2n. : 
Name—wuxpée, small, sxovéw, to look ; from its minute- 
ness. 
Rannoch, N.B.! (Dr. Buchanan White). 
B. SESSILE. 
5. Vibrissea Guernisaci. Crouan. 
Minute, lentiform or turbinate, between fleshy and 
gelatinous; hymenium pallid, ochraceous or grey, convex ; 
asci cylindrical, long ; sporidia 8, filiform, hyaline, 270u 
long; paraphyses slender, branched near the clavate 
summits. (Plate X. fig. 61.) 
Vibrissea Guernisaci—Crouan, “Ann. Se. Nat.,” 
1857, t. iv. f. 24-26; “Flo. Fin.” p. 46; Phil. and Plow., 
“ Grevillea,” iv. p. 120; Phil. “Trans. Linn. Soe.,” ser. 2, 
vol. ii. p. 8, t. ii. £ 1-7; Gill, “Champ.,” p. 204, ci; Pat., 
p- 168, f. 369. 
Exs.— Phil. “ Elv. Brit.,” No. 143. 
On dead submerged branches of Salix in water. May 
and June. 
Cups } to 14 lines broad. It first appears on the 
branches as a small greyish wart, with a somewhat paler 
point in the centre. Ina more advanced state it assumes 
the form of a thick disc, similar to the apothecia of 
Lecanora. The hymenium is convex, soft in texture, 
