284 BRITISH DISCOMYCETES. 
Genus XII.—Prrott#a. SAccaRDo. 
Cup superficial, or between erumpent and superficial, 
sessile, scutellate, nearly carbonaceous, black, clothed 
with short rigid bristles ; asci 8-spored ; sporidia oblong, 
continuous, hyaline. (Plate VIII. fig. 52.) 
The habit of Pyrenopezize, but setulose (Sacc. in 
“ Mich.,” i. p. 424, 
Name—After R. Pirotta. 
_ Only one British species. 
Pirottea vectis. (B. and Br.) 
Cups scattered, sessile, subglobose, then hemispherical ; 
externally dark brown or nearly black, clothed with 
short, rigid, brown, bristle-like hairs ; hymenium concave, 
pallid-cinereous; asci cylindraceo-clavate; sporidia 8, 
elongate-fusiform, curved, or vermiform, 1 to 3-septate, 
25 X 44; paraphyses slenderly filiform. (Plate VIII. 
fig. 52. 
co vectis—B. and Br., “ Ann. Nat. Hist.,’ No. 957 
Cooke, “ Handbk.,” No. 2063. 
On dead stems of Centawrea nigra. 
Cups 800u broad. The short, rigid, nearly black 
hairs are chiefly on the margin, and are intermixed with 
brown polygonal granules. 
Name— Vectis, the name of the Isle of Wight. 
Ryde! (Rev. A. Bloxam). 
Order III—ASCOBOLEZ. Boud. 
Receptacle sessile, plane or convex, fleshy or sub- 
gelatinous ; asci broad, never cylindrical, easily emergent, 
rendering the dise papillate by their prominent summits. 
(Plate IX. figs, 53-58.) 
Named from the typical genus. 
_ For the most part growing on old dung of animals 
in rail places ; sometimes on earth or decaying vegetable 
matter. 
