294 FUNGI. [Hysferium, 



oblong straight nearly even opaque black, lips swollen, disc 

 linear. Fr. Si/st. Myc. v. 2. p. 581. Scler. Sued n. 62. — 

 /3. ciirvatinn, close flexuous somewhat interwoven. H, lineare, 

 Johnsf.FL Bene. 2. p. 135. 



(I. On the stems of Roses. Berwick, Dr. Johnston. It has also 

 been found by Mr. Purton. 



3. H. linedre, Fr. (linear Hysteriuni) ; subimniersed crowded 

 parallel linear black, lips slightly swollen even, disc linear. Fr. 

 Sijst Myc. V. 2. p. 583. Scler. Suec. ! n. 90. Grev. Sc. Crypt. 

 Ft. t. 1 67. /. 2.— ZT. anyuslatimi, Moug. ^ Nest. ! n. 563. Purt. 

 V. 3. 71. 1578. 



On wood ; not uncommon. 



4. H. Carniichaelidnum^ Berk. (CarmichaeVs Hysterium) ; 

 superficial substipitate short linear or subelliptic black opaque 

 not even, lips obtuse inflexed. — Hyst. varium, Grev. Sc. Crypt. 

 FL t. 233. 



On smooth oak bark. Appin, Captain Carmicliael. — This species 

 is pronounced by Fries, in his Elenchus, to be not his H. varium ; and, 

 consequently, as it is very well marked, I have drawn up a specific 

 character from the only specimen preserved in the Appin collection. 



** Erumpent. 



5. H. Frdxini, Pers. (Ash-twig Hysterium) ; erumpent elliptic 

 hard black, lips tumid even, disc linear. Pers. Syn. p. 100. 

 t. 2. f. 5—8. Moug. &; Nest. ! n. 267. Purt. v. 3. p. 319. t. 32. 

 Fr. 'Syst. Myc. v. 2. p. 585. Grev. Sc. Crypt. Fl. t. 72. FL 

 Ed.p.ZQ7. Baxt.l Ox. n.^^.-^Sph. sulcata, Bolt. t.\24t. Sow. 

 t. 315. Purt. V. 2. p. 711. 



On the smaller fallen branches of the Ash. Winter and spring. 

 Extremely common. 



6. H. rugosum, Fr. (rugged Hysterium) ; stroma crust-like 

 innate brown-black, perithecia elliptic bursting through the 

 living bark at length running together into irregular spots. 

 Fr. El. 2. p. 140. — Opegrapha macularis, Ach. Syji. p. 72. — x. 



fagineum ; perithecia larger slightly prominent oblong at length 

 running together into effused rugged spots. Fr. ! Scler. Suec. 



72.353 Schizodermafagineum, Chev. Fl. Par. t. W.f.u. p. 438. 



— Opegr. epiphega, E. B. t. 2282 (3. cjuerciuum ; perithecia 



smaller subimmersed ovate at length running together into 

 subdeterminate nearly even spots. Chev. I. c.f. 21. t. 



On the smooth branches of beech and oak. Extremely common. — 

 Usually referred to the order Lichenes, from which, however, Messrs. 

 Borrer and Hooker, in accordance with the views of Chevallier,Wallrotli 

 and Fries, consider it extraneous. See E?ig. Fl. v. 5. P. I. p. 148. 

 Indeed Sir James Smith, long since, had expressed the same opinion, 

 perceiving its affinity with Hijsterium. It differs from other Hysteria 

 in the presence of a stroma and in its being produced on living bark. 



7. H. conigenum, Moug. & Nest. (Scotch-fir cone Hysterium) ; 



