Sphaeriacese, Hyalodidymae, Sphaerella. 487 



chis, ovoideo-oblongatis, utrinque rotundatis, uuiseptatis, ad sepi- 

 meiitum vix constrictis, levissime flexis, nucleo minutissirae gra- 

 nulato, 30-35 i; 11-18; paraphysibus nuUis, 



Hab. in foliis Salicis polaris aridis ad Treurenbergbay, 

 Spitzberg. — A Sph. genuflexa cujus, sec. Karst, subspecies ha- 

 benda, satis recedit ascis sporidiisque tertia parte crassioribus. 



50. Sphaerella Capronii Sacc. Sph. salicicola Cooke Handb. n. 2744, ises 

 nec Rabh. — Maculiformis v. sparsa; peritheciis inaatis, puncti- 

 formibus, globulosis, nigris, nitidulis; ascis cylindraceis; sporidiis 

 monostichis v. distichis, uniseptatis, hyalinis, 15 [x. longis. 



Hab. in foliis Salicum, Shere Britannise (E. Capron). — Pe- 

 ritheciorum ostiolis amplis, sporidiis triplo fere raajoribus a Sph. 

 salicicola differt. 



51. Sphaerella salicicola (Fr.) Fuck. Symb. myc. p. 106, Sphceria sa- im 

 licicola Fr. S. M. II, 530 p. p., Rabh. in litt. ad Auersw., Sacc. 

 Rel. myc. Lib. Ser. II, n. 169, t. XX, flg. 9. — Peritheciis epiphyllis 

 hinc inde maculiformiter dense gregariis, epidermide velatis, glo- 

 boso-depressis, poro pertusis ; ascis tereti-clavulatis, brevissime sti- 

 pitatis, 40-45^:5-6; sporidiis clavulatis, uniseptatis, non constri- 

 ctis, hyalinis 6 ^ 2. 



Hab. in pag. super. foliorum Salicis caprese, S. nigri- 

 cantis, S. triandrsein Germania, Gallia et Italia. 



52. Sphaerella curvulata Pass. Hedw. 1876, p. 106. — Araphigena, i870 

 sparsa vel dense gregaria, peritheciis punctiforraibus, atris ; ascis 



ex ovata basi sursura attenuatis, 8sporis ; sporidiis distichis vel inor- 

 dinatis, oblongo-cuneatis, septatis, vix constrictis, loculis 1-2-gut- 

 tulatis, hyalinis. 



Hab. ad folia dejecta Salicis albae, vere, Parraa, Italia bor. 



53. Sphaerella maculosa Sacc. Sph. macularis Karst. Myc. Fenn. II, i87i 

 p. 174 nec Fr. — Peritheciis araphigenis, saepissirae taraen hypo- 

 phyllis, parenchymati innatis subiculoque filamentoso, fusco insi- 

 dentibus, epidermide cinerascente tectis, dein erumpentibus, gre- 

 gatim sparsis, spha^roideis, ostiolo minuto, atris, 60-75 [j.. latit. ; 

 ascis sessilibus, elongatis, basin versus inflatis, 70-95:^11-14 octo- 

 sporis; sporidiis in parte asci superiori raonostichis, iu inferiori 

 distichis, late ovoideo-oblongatis, uniseptatis, ad septura leviter 

 constrictis, flavescentibus vel luteolis, 14-16 s; 6-7. 



i/a^. in foliis Populi tremulae dejectis sat frequens in Fen- 

 nia. — Species singularis. Maculas griseas angulosas vel suborbi- 

 culares, ssepe veuis limitatas, variai latitudinis format. — A SpJi. 



