The Scottish Naturalist. 



73 



On leaves oiCorylus Avellana, spores "0004 inch long"; but 

 as above noted I found what appears to be this species, on 

 angular brown spots each 4 or 5 mm. broad, with a narrow 

 dark border ; pyenidia prominent, circinate ; sporules very- 

 abundant, fusiform-filiform, 25-40 by 2-2 J, straight or 

 slightly curved, septa 3 or 4, hyaline. 



Septoria obscura sp. n. 



On living leaves of Campanula rotundifolia in Hell's Glen. 

 Spots becoming dry and dull brown, rounded or irregular, 

 with indistinct narrow dark border ; pyenidia innate, am- 

 phigenous, scattered over the spot, minute, dark, ostiole 

 short; sporules filiform-cylindrical, ends obtuse, 22-35 by 

 1^, slightly curved, yellowish, triseptate. 



Septoria Polygonorum Desm. var. nova Persicariae. 



Near St. Catherine's on Loch Fyne I found on P. Persicaria 

 what is probably a form of & Polygonorum ; but it is well 

 distinguished from the type, as its sporules measure 30-50 

 by 2-2^, and show 3 to 5 faint septa, while in the type they 

 measure 25 by 1, and are 4-5-guttulate (fide Saccardo). 



Septoria graminum Desm. var. nova Moliniae. 



At Dalmally, near Loch Awe, I found a Septoria spotting the 

 living leaves of Molinia caerulea, which agrees wholly with 

 S. graminum in the spots and pyenidia, but differs in hav- 

 ing smaller sporules (30-40 by 1.) 



Marsonia Rosas sp. n. 



On leaflets of Rosa tomentosa in the Trossachs. Spots epi- 

 phyllous, dull red-brown above, brown below, pustules 

 minute, very inconspicuous ; conidia subcylindrical, often 

 subfalcate, 20-23 by 6, hyaline, coarsely granular, unisep- 

 tate. 



Oospora Epilobii (Corda) Sacc. and Vogl. 



Forming pale effused patches on brownish spots on leaves, 

 stems and fruits of sickly plants of Epilobium tetragonum, 

 on Duniquoich, near Inveraray. Mycelium creeping, 

 slender; fertile conidiophores erect, septate, bearing on 

 their tips the conidia, singly or in chains, which are obovate, 

 18-20 by 9-10, smooth; epispore (like the mycelium) hyaline, 

 cell contents contracted. 



