28 SACCARDO, PECK, TRELEASE 



Nectria sanguinea (Sibthorpe) Fries. 



New Metlakatla (Trelease, 685a, on dead bark, associated with 

 Microcera brachyspord) ; Yakutat Bay (Trelease, 684a). 



Nectria episphaeria (Tode) Fries. 



Sitka (Trelease, 683, on stromata of some sphaeriaceous fungus on 

 branches apparently of Alnus). 



Family SPH^RIACE^. 

 Pyrenophora chrysospora (Niessl) Saccardo. 



Kukak Bay (Coville & Kearney, 1552a, on dead petioles and stipules 

 of Oxytrofis^. 



Pjrrenophora comata (Niessl) Saccardo. 



Port Clarence (Brewer & Coe, 1953a) ; St. Paul Island, Bering Sea 

 (Macoun in 1891). On dead leaves and stems of Arenaria verna and 

 A. macrocarpa. 



Pyrenophora polyphragmoides Saccardo & Scalia, sp. nov. (p1. v, 



%• 13-) _ 



Peritheciis erumpentibus, sparsis, punctiformibus, nigris, globulosis, 

 190-220 !i diam., setis rigidis, fuscis, septatis, 160-190 X 7.5 ai, vertice 

 vestitis ; contextu parenchymatico, fuligineo ; ascis cylindraceis, rectis 

 curvulisve, apice rotundatis, brevissime oblique stipitatis, octosporis ; 

 sporidiis distichis, oblongo-fusoideis, utrinque obtusulis, initio 3-sep- 

 tatis, dein sub-y-septatis, melleis, tandem 9—1 2 -septatis, murali-divisis, 

 medio vix v. non constrictis, 36-56 x i8;u, fuligineis. 



Popof Island (Harrington in 187 1-2, on decayed stems and leaves 

 of Polemonium humile). 



Affinis P. phceosporce et P. polyphragmice sed rite distincta. 



Pleospora media Niessl. 



Unalaska (Harrington in 187 1-2, in decayed leaves of Draha ver- 

 nalis) . 



Est forma sporidiis latioribus (26-28 x 13-14 /i), ut var. limonum 

 Penzig. 



Pleospora pentamera Karsten. 



Walden Island (Hb. Thiel., on leaves and stems of Dupontia 

 jhckeri) . 



Sporidia plerumque 5-septata. 



Pleospora infectoria Fuckel. 



Nagai (Harrington in 187 1-2, in dead culms of Poa ccestaf). 



