Systematic List of Fungi (Microm3'cetes) from Nortli-East Greenland. 155 



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

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

 Loc. On leaves of Arctag rostis lati folia, Danmarks Havn ^*h 08. 



Note. New for Greenland. 



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

 Pleospora arctica Karsten = Pleospora Karstenii Berl. & Vogl. 



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

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

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

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

 dinaliter 1 — 2-septatis. 



This is ver}' probably the same fungus, as classified by Rostrup 



(Fungi groenlandiae 1888) under Pleospora herbarum (Pers.) Rabenh. 



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



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



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



with age they grow darker than those of PI. herbarum. 



Loc. On Hpilobiiim lati folium, Termometerfjeld Jul}^ 1907 and Lille 

 Snenæs 'Ч, 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 

 100// 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 lomjijæs. Cape Marie-Valdemar "■'/« 06. 



Note. New for Greenland. 



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



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



Loc. On Alopeciinis alpiniis. Stormkap ''*Ь, 06; Poa abbreviata, St. Kolde- 

 wey i''ls 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. 



