258 FUNGI. [Sphceria- 



Ann. des Sc. iV. S. v. 1. t. II. f. 2., and perhaps is only a state of it 

 modified by the more juicy matrix ; differing principally in being smaller, 

 and, as far as I have observed, not having the ostiola disposed con- 

 centrically. I have not found it in suiticient abundance to ascertain 

 whether the stroma penetrates entirely through the apple as is the case 

 in S. gigantea which grows on leaves of Agave Americana. When 

 dry the ostiolum is frequently crowned with a short minute golden green 

 irregular tendril oozing out from the perithecium. The perithecia vary 

 considerbly in size and in the degree of exsertion of the ostiolum. S. 

 malina, Fr. Obs. Myc, which is not noticed at all in the Index Alpha- 

 heticus, and consequently, I presume, discarded by Fries himself, is 

 evidently quite different. 



103. S. yucc(S^ Schwein. (Yucca-leaf Sphcerid) ; innate at 

 first covered with the grey seceding epidermis, perithecia glo- 

 bose immersed, ostiola minute dot-like. Schivein. ! Syn, Car, 

 12, 88. Fr. Si/st, Mi/c. V. 2. ^j. 437. Purt 3ISS. 



On decaying leaves of Yucca gloi-iosa. Alcester, 3Ir. Purton. — 

 *' In roundish unequal spots irregularly scattered, 1 line broad, not 

 prominent, penetrating the substance of the leaf, veiled at fii'st by the 

 epidermis." Purt. MSS. adopted from Fr. I. c. 



104. S. hifrons, Schm. & Kun. (two-faced Sphcsria) ; minute 

 disposed in circles penetrating the leaf flattened black at length 

 splitting all round, perithecia slightly prominent convex at 

 length umbilicate. Fr, Si/st. Myc. v. 2, p. 438. S, circumval- 

 lata, Soiu, ! t, ^12,, f, 4, Xyloma bifrons, Dec, 3Iem. 3Ii(s, v. 2. 

 2). 322. f.S.f. II. X circinans, Moiig. S^ Nest! 7i. 480. 



On dry oak leaves. Soicerhij. — Patches angular, not 1 line broad, 

 their shape being dependant on the meshes of the veins, seated on a 

 white spot ; perithecia one or more, at length naked from the upper 

 portion of the patch breaking off. This must not be confounded with 

 Pkacidimn dentatum, 



105. S. ceuthocdrpa^ Fr. (popilar-leaf Sphceria) ; innate flat 

 angular opaque black scattered upon a pale spot, perithecia 

 latent generally solitary. Fr. Syst. Myc. v. 2. p. 439. Xy- 

 loma popidimwi, Pers. Syn. p. 107. Dec. Mem. Mus. v. 2. p. 

 325. Movg. &;Nest. ! n. 269. Grev. Fl. Ed. p. 368. 



On dry poplar leaves. About Edinburgh. Dr. Greville. — It appears 

 to me that the principal difference of tliis species arises from the looser 

 reticulations of the under side of the leaves. It is more scattered than 

 the last, rather larger and not shining. 



106. >S'. ceidhosporoides, Berk. (Cexdliospora-like SphcBria); 

 stroma formed of the parenchyme of the matrix suhorbicular 

 reddish-brown circumscribed by a narrov/ distinct black line 

 penetrating the leaf, perithecia 6 — ^10 scattered covered pro- 

 jecting on eitlier surface, their apices seated on the upper side 

 of the leaf which is at length pierced with minute round orifices. 

 Ceidhospora circumscripta, Klotzsch in Hook. Herb. 



On leaves of Prunus Luuro-cerasus. Near Edinburgh, Dr. Greville. 

 Aug. — Spots 1^ — 2^ lines broad, completely penetrating the leaf, so as 



