ABKOTHALLUS KARSCHIA. 99 



KAESCHIA. Korber. 



Ascophore sessile, superficial, more or less applanate, at first 

 marginate then becoming almost or quite plane and without 

 a margin ; blackish ; excipulum parenchymatous ; waxy, 

 rather horny when dry ; asci clavate, 8-spored, wall thick at 

 the apex; spores smooth, brown, 1 -septate ; paraphyses sep- 

 tate, apex thickened and coloured; hypothecium thick, 

 mostly coloured. 



Karschia, Korber, Parerg. Lich., p. 459 ; Rehrn, Krypt.- 

 Flora, Disc., p. 345; Sacc., Svll., viii. p. 779. 



Patellaria, Phillips, Brit. Disc., p. 360. 



Karschia lignyota. Sacc., SylL, viii. n. 3200 ; Rehm, 

 Krypt.-Flora, Disc., p. 346, fig. 1-5, p. 299. 



Ascophores mostly scattered, sessile, circular, at first closed, 

 then expanding and marginate, finally almost or quite plane 

 and without a raised margin ; excipulum parenchymatous, 

 cells small, olive-green ; blackish-olive then almost or quite 

 black; waxy, horny when dry; up to 1 mm. across; asci 

 clavate, apex rounded and with the wall thickened, 8-spored ; 

 spores elliptic-oblong, smooth, brown, 1-septate, the upper 

 cell slightly wider than the lower one, slightly constricted at 

 the septum, 9-12 x 4-5 fi; paraphyses septate, branched, 

 slightly thickened, and brown at the apex; hypothecium 

 pin kish-brown . 



Patellaria lignyota, Fries, Syst. Myc., ii. p. 150; Phil., 

 Brit. Disc., p. 360. 



Patellaria Strickeri, Sacc., Fung. Ital., f. 1411. 



Karschia nigricans, Eehm, Asc., n. 21. 



Arihonia melaspermella, Nyl., Flora, 1865, p. 605; Leighton, 

 Brit. Lich.-Flora, p. 416. 



On old decorticated wood. 



Specimen from Fries examined. 



Karschia Bloxami. Sacc., Syll., viii. n. 3208. 

 Ascophore sessile, fixed by a- point, applanate, about |- mm. 

 across, gregarious, at first with a very delicate margin^ then 

 plane or convex and immarginate, black ; excipulum paren- 

 chymatous, cells small, blackish-olive with a tinge of red 



H 2 



