SPH^RIACEl. 913 



Wallr. p. 770. Cooke L.F. no. SS. FcJcl. exs. no. 84^7. Sphc^reUa 

 maculcEformis, var. a. centigrana. Seem. Journ. Bat. (1866) no, 

 1. Cooke exs.no. 169. 



On cLesnut and hazel leaves. 



2744. Sphaerella salicicola. Fr. " Willow-leaf Sphferella." 



Macul^form or scattered ; peritliecia innate, iDunetiform, glo- 

 bose, black, shining ; asci cylindrical ; sporidia uniseriate or bi- 

 seriate, uniseptate, hyaline. — Sphceria salicicola, Fr. S.M.ii.p. 



On le2iYes of Sal IX. April. Shere. (E.G.) 



The perithecia have a very peculiar appearance with their large ostiola. 

 Habit of S. maculceformis, but spores twice the size, '0006 in. 



2745. Sphaerella crataegi. Ickl. " Hawthorn Sphaerella." 



Hypophyllous. Perithecia scattered, or loosely gregarious, 

 black, innate, subglobose, pierced , asci broadly clavate ; sporidia 

 fasciculate, elongated, fusiform, obtuse, hyaline, uniseptate. — 

 Fckl. exs. no. 2162. Gonn. 4' Bahh. t. 7,/. 94: (imperfect). 



On leaves of hawthorn. Shere. (Dr. Capron.) 



Auerswald describps the sporidia as entire, whereas, when mature, they 

 are uniseptate ; asci ('002 in.) '05 m.m. long. Sporidia ("0015 in.) '04 m.m. 

 long. 



2746. Sphaerella oblivia. Coohe. " Chestnut Spharella." 



Spermogoxia. — Perithecia brownish-black, minute, numerous ; 

 spermatia elongated, linear, oozing out in flesh coloured tendrils. 

 — SeptoriacastancBCola, Desm. (See no. 1337, ante.) 



AscoPHORE. — Perithecia semi-innate, black, closely agglome- 

 rated in small but dense macula?form spots consisting of from ten 

 to twenty individuals ; asci cylindrical ; sporidia biseriate, curved, 

 uniseptate, the lower cell the narrowest, slightly yellow. — Cooke 

 Seem. Journ. (1866) t. 49,/. 8. >S'. maculceformis [^d.x\\.f) Gonn. (J- 

 Rabh.Y. t. 1,/. 7. 



On the under surface of dead chestnut leaves, mixed with S. 

 maculceformis. Darenth Wood, Kent. 



Sporidia (-OOOo.-OOOe in.) •0125.'015 m.m. long. 



2747. Sphaerella arcana. Cooke. " Hidden Sphaerella." 



Perithecia minute, subinnate, either collected in " macula?- 

 form " spots or scattered, black and shining; asci broadly fusi- 

 form ; sporidia crowded, linear, straight, obtuse at the extremi- 



2 Q 5 



