Systematic List of Fungi (Micronijcetes) from North-East Greenland. 155 



33. Pleospora Arctagrostidis Ouds. Sacc. Syllog. IX, p. 879. 

 Ascis 120;/ X 32//; sporidiis 36— 38/i x 12—13//, 5— 7-septatis. 

 Loc. On leaves of A relay rostis latifolia, Danmarks Havn '*/? 08. 



Note. New for Greenland. 



34. Pleospora arctica Fuck. Sacc. Syllog. IX, p. 882. Non 

 Pleospora arctica Karsten = Pleospora Karstenii Beii. & Vogl. 



Peritheciis 350/^ x 240//; ascis oblongis, ciirvatis, 100—128/^ 

 X 23 — 28//; paraphysibus numerosis, hyalinis, multiguttulatis; spo- 

 ridiis initio flavis, dein saturate brunneis, 34—36« x 14 — 16/«, 6- 

 septatis, medio constrictls, parte superna parum tumidiore, longitu- 

 dinaliter 1 — 2-septatis. 



This is very probably the same fungus, as classified by Rostrup 



(Fungi groenlandiae 1888) under Pleospora herbariim (Pers.) Rabenli. 



with the remark, that there is no difference between PI. arctica and 



PL berbariim. In my opinion there are, however, several differences 



between these two fungi: the sporidia of PI. arctica are smaller and 



with age they grow darker than those of PL herbarum. 



Loc. On Epilobium lati folium. Termometerfjeld July 1907 and Lille 

 Snenæs ''h 08. 



35. Pleospora Cerastii Oudemans (Contributions à la Flore 

 mycologique de Nowaja Semlja, Verslag. en Meded. d. Kon. Akad. 

 V. Wetensch. Afd. Natuurk. 3. Del, II, Amsterdam 1885 p. 146). Ascis 

 \00 fjt X 20 ^«, crasse tunicatis; sporidiis flavis, 28 — 32// x 12 — 14«, 

 4 — 6-septatis, septisque 1—3 longitudinaliter divisis. 



Saccardo (Syllog. II, p. 285) considers it to be a variety of 

 Pyrenophora chrysospora, with which opinion I cannot agree as f. 

 inst. Pyr. chrysosp. is quite constant in having 7 dissepiments in 

 every spore, this fungus always having less. 



Loc. On dead stems of Stellaria longipes. Cape Marie-Valdemar "Is 06. 



Note. New for Greenland. 



36. Pleospora deflectens Karst. Sacc. Syllog. II, p. 266. 



Sporidiis 26—29// x 12//, 7-septatis. 



Loc. On Alopeciinis alpimis, Stormkap '^le 06; J^oa abbrcuiata, St. Kolde- 

 wey i-'/s 06. 



37. Pleospora discors (Mont.) Ces. & de Not. Sacc. Syllog. II, 

 p. 270. 



Peritheciis sparsis, epiphyllis, globosis, vertice erumpentibus, 

 ostiolo papillaeformi; ascis 8-sporis, 140,« x 28 — 32//, crasse tuni- 

 catis; sporidiis oblongatis, utrinque obtuse rotundatis, inaequilatera- 

 libus, transverse 5 — 6-septatis, in longitudine 1 divisis, initio flavis 

 dein atris opacis, 35—42// x 12—15/^, interdum strato gelatinoso, 

 10 — 12// crasso cinctis. 



