TYMPANIS. 351 



Exs.— Fries, "Scl. Suec," No. 101; Fckl., "F. Rh.," 

 1964; Cooke, "Fung. Brit.," ii. 196; Rabh., "Fung. Eur.," 

 2021; Phil., "Elv. Brit./' 43; Rourag., "Fung. Gal./' 1266. 



On dead raspberry-stems. Common. 



A doubtful Cenangium. 



Name — Rubus, a genus of Rosacea? ; from its habitat. 



Church Stretton, Salop ! 



Genus IV. — Tympanis. Toda. 



Csespitose 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 — pycnidia, spermogonia, or stylospores. (Plate XI. 

 fig. 67.) 



On dead wood. 



Name — rvjunravov, a drum. 



Arrangement of the Species. 



a. Sporidia oblong-elliptic . . . . . . species 1 



b. Sporidia linear-fusiform . . . . . . „ 2 



c. Sporidia very minute, innumerable . . „ 3-8 



Key to the Species. 



In linear series : on Hhamnus Frangula . . . . Frangulss, 



Gregarious or solitary : on Ligustrum vulgare . . ligustri. 



Scattered or caespitose : on Finns sylvestris . . amphlbola. 



Scattered or caespitose : on Larix Europseus . . laracina. 



Caespitose in elongated groups : on Crataegus . . conspersa. 



Caespitose in elongated groups : on Fraxinus . . Fraxini. 



Caespitose in rounded groups : on Sorbus aucuparia Aucuparix, 



Csespitose in rounded groups : on Alnus .. .. alnea. 



A. SPORIDIA OBLONG-ELLIPTIC. 



1. Tympanis Frangulce. 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 — 22x8/*; 

 paraphyses filiform, slightly enlarged at the apices. 



'■' Pycnidia intermixed with the above, sphaeriaform, 



