SOME ARGYLL AND PERTHSHIRE FUNGI 37 



UREDINACE^E. 



MELAMPSORA ARCTICA, Rost. 98, on leaves of Salix herbacea, Ben- 

 an-Dothaidh, at 3100 ft. 



Specimens of the Salix were brought home for cultivation 

 at Walton, near Liverpool, and it was observed to be infected 

 by a Lecythea, on the under sides of the leaves only. After 

 the fall of the leaves, they were left on the soil to see if the 

 teleutospores would develop. Two only of the rufus-black 

 sori were obtained. As the two species of Melampsora 

 commonly found on the larger willows do not appear to have 

 been recorded as occurring on S. herbacea, it was thought that 

 our specimens might prove to be one of the more boreal 

 species, M. arctica, Rost, and M. alpina, Juel. Through the 

 kindness of Professor Warming, F.L.S., of Copenhagen Uni- 

 versity, we obtained from Mr. Jens Lind information regarding 

 these two species, which enabled us to determine our plant to 

 be M. arctica. We are not aware that this alpine fungus has 

 been previously recorded as British, but it occurs in Green- 

 land on Salix groenlandica, S. glauca, S. herbacea, and S. 

 arctica, in Norway on 6". glauca, S. nigricans, and S. herbacea, 

 and in the Tyrol on S. retusa. 



M. alpina should be sought for in Scotland, as two of its 

 hosts, Saxifraga oppositifolia and Salix herbacea, not in- 

 frequently grow in propinquity. In this species the uredo- 

 spores are usually epiphyllous and the teleutospores amphi- 

 genous. Both stages are hypophyllous in M. arctica. 



PYRENOMYCETES. 



HYPOMYCES CHRYSOSPERMUS (Fckl.}. 88, Wood near Loch Rannoch 

 in the conidial condition, Sepedonium chrysospennuni}. 



XYLARIA HYPOXYLON, L. 88, north side of Loch Rannoch. 



LINOSPORA CAPRE.E (D.C.\ Fck. 98, on leaves of Salix herbacea, 

 on Ben-an-Dothaidh, at 3100 ft. This fungus developed in 

 November on the fallen leaves of the Salix under cultivation, 

 referred to under Melampsora. As the Salix was grown 

 under glass and no other species of the genus was grown in 

 the house, it is presumed that these plants were already 

 infected when gathered. L. arctica is said to occur on the 

 leaves of Salix retiadata ; and as S. herbacea is a similar small 

 boreal species it was thought that the Linospora would be L. 

 arctica rather than L. Caprece, which usually occurs on the 

 more arboreal Salices of less alpine localities. The spores, 

 however, agree with those of L. Caprea, being smaller and much 

 narrower (125 juby 2 //,) than those of L. arctica, which are 165- 



