7 6 



The Scottish Naturalist. 



Br. I therefore propose the genus Graphiopsis (character- 

 ised as above) to include certain species referred formerly 

 to Periconia, of which P. chloroctphala Fres. may be taken 

 as the type. It resembles Periconia in general appearance, 

 but differs in having catenulate conidia, and usually a few 

 stout brown branches near the tip of the erect conidio- 

 phore. From Hdplographium it differs in the brown 

 conidia, and in the colour and the mode of branching of 

 the tip of the fertile hyphae. H. bicolor Grove may also 

 be placed in a new genus, for another species of which I 

 had already proposed the name Rhipidocephalum 

 Abietis before recognising the generic relationship of the 

 two. 



G. chlorocephala (Fres.) is not uncommon on dead Junci, 

 Carices, &c, in " Dee," and I have also met with it in 

 " Tay " at St. Cyrus. 



Isariopsis Stellariss sp.n. 



On undefined spots on leaves, which above appear paler, dry- 

 ing to a straw yellow, and on lower surface bear the usual 

 scattered tufts of nearly erect slender hyaline hyphae, which 

 are slightly swollen near the top. Conidia elliptical or 

 subcylindrical with rounded ends, 10-16 by 5-6, hyaline, 

 always continuous, attached to the hyphae by a narrow 

 isthmus. All parts of the fungus are white. On Stellaria 

 graminea, at Cladich near Loch Awe. I have found the 

 same species, in July 1885, on Stellaria nemorum near 

 Stonehaven. It differs from /. albo-rosella (Desm.) Sacc. 

 (which I found on Cerastium triviale, in February 1886, 

 near Aberdeen) in the pale rose colour of the erect hyphen 

 and the larger size (15-30 by 5J-7 J) of the 1-2-septate 

 conidia of the latter. Fuckel has suggested that I. albo- 

 rosella is a conidial condition of Sphaerella Cerastii ; 

 but the connection has never been demonstrated. 



