TYMPANIS. 351 
Exs.—Fries, “Sel. Suec.,”” No. 101; Fekl., “F. Rh.,” 
1964; Cooke, “Fung. Brit.” ii. 196; Rabh., “Fung. Eur.,” 
2021; Phil., “Elv. Brit.,” 43; Roumg., “Fung. Gal.,” 1266. 
On dead raspberry-stems. Common. 
A doubtful Cenangium. 
Name—Rubus, a genus of Rosacee ; from its habitat. 
Church Stretton, Salop! 
Genus IV.—Tympanis. Toda. 
Ceespitose or scattered, stipitate or sessile, black, at 
first closed, then open, concave or plane, naked or rarely 
mealy, firm, horny ; sporidia 8 or innumerable. Secondary 
fruit—pyenidia, spermogonia, or stylospores. (Plate XL 
fig. 67.) 
On dead wood. 
Name—vipravov, a drum. 
ARRANGEMENT OF THE SPECIES. 
A. Sporidia oblong-elliptic .. si +. species 1 
B. Sporidia linear-fusiform .. wo es aK 
o. Sporidia very minute, innumerable a » 38-8 
Key To THE Sprcizs. 
In linear series: on Khamnus Frangula .. «. Frangulz. 
Gregarious or solitary: on Ligustrum vulgare .. ligustrt. 
Scattered or cxespitose: on Pinus sylvestris .. amphibola. 
Scattered or cespitose: on Larix Huropzus .» laracina. 
Cerspitose in elongated groups: on Cratzgus +. conspersa. 
Cexspitose in elongated groups: on Frazinus .. Frasint. 
Cespitose in rounded groups: on Sorbus iparia ~=Aucupariz. 
Caspitose in rounded groups: on Alnus .. .. alnea. 
A. SPORIDIA OBLONG-ELLIPTIC. 
1. Tympanis Frangule. Fries. 
Gregarious or in linear contiguous series, turbinate- 
truncate, blackish, subcoriaceous; hymenium plane, 
umber or olive-brown, when dry black; asci broadly 
cylindraceo-oblong, narrowed at the base; sporidia 4, 
oblong-elliptic, becoming 3 to 4-septate, 19—22 x 8u; 
pavaphyses filiform, slightly enlarged at the apices. 
“Pyenidia intermixed with the ahove, spheriaform, 
