Sphaerioidoae. 

 4S. Mycogala parietinum (Sclirad.) Sacc. Syll. III, p. 18'). 



l-»)c\ Oli wood in Hu- bi'illi ol' .I;iriuT. Dniiinaiks Ihivn OcIoIxt 1!)()7. 

 Note. Xcw for (irccMilaiul. 



49. Ascochyta Dianthi (A. Ä S.) l/ilxil. Sacc. Syllog. III, 

 p. 398 c^ X, p. aoi. 



Sporidiis ulriiKpie ohtusis, curvulis, 1-septatis, liyalinis, guttulatis, 

 15 — 21 f i X A fi. 



Lo c. On ('.vritsliuiu (ilpiinmi. Ilareljeld '-"7 07. 



50. Rhabdospora Drabae (Fuck.) Berl. & Vogl. Sacc. Syllog. 

 X, p. 391. Syn: Phoma Drabae Fuck., Septoria Drabae Rostrup, Sep- 

 toria semilunaris Johans. Sacc. Syllog. X, p. 363. 



It was fust described by Fuckel as Phoma Drabae (Fuckel: 

 Die 2. deutsche Nordpolfahrt in den Jahren 18()9 und 1870. II. 

 Abth. Botanik, p. 94. Bremen 1872) and figured in the same paper 

 tab. I fig. 9. Both description and figures are again found in Olde- 

 man's work (contributions à la llore niycologique de Nowaja Semlja 

 p. 150, Amsterdam 1885). Rostrup classifies it as belonging to Sep- 

 toria (Fungi groenlandiae, 1888 p. 572) and Berlese & Voglino calls 

 it Rhabdospora Drabae. 



Johanson's Septoria semilunaris (Svampar Iran Island. Ofv. of 

 Kg). Vet. Akad. Förh. 1884 No. 9 p. 173) ought to be classified in the 

 same genus (formgenus) as it appears on dead stalks and leaves 

 only. It is, however, impossible to find a constant difference between 

 Johanson's and Fuckel's two fungi. According to the description 

 the only difference should be, that the sporidia of Rliab. Drabae 

 measure 22// x 2 (i and the sporidia of Rhab. semilunaris 10 — 15/^ 

 X 3 — 5/i; but Allescher (Allescher und Hennings: Pilze aus dem 

 Umanakdistrict. Bibliotheca Botanica Heft 42, 1897 pag. 51), who 

 has found Rhab. semilunaris on the same substratum as Johanson, 

 viz. on drj^ stalks of the flowers of Dryas, gives the sizes of the 

 sporidia as being 14 — 20 // x 15 — 25 lu, and he has also found 

 traces of a dissepiment in them. And if we examine a sufficient 

 number of specimens, we find all possible transitions among them. 

 So I consider it right to unite the two species (form-species) into one. 



Septoria Vanhøffenii P. Henn (Allescher und Hennings 1. c. p. 52), 

 Septoria nivalis Rostrup (Fungi groenlandiae 1888) and Septoria cera- 

 sticola Rostrup (Islands Svampe. Botanisk Tidsskrift 1903) also 

 seem to come very close to Rhabdospora Drabae. 



In the size and shape of the sporidia (stylospores) they seem to 

 be very much like Rhabdospora groenlandica (conf. Tab. X fig. 8 — 

 9 — 10) which will be mentioned later on, but Rhab. Drabae has 



