The Scottish Naturalist. 195 



perhaps to intimate that Ascomyccs tricntalis requires more 

 minute examination, especially in a fresh state, than it has 

 received, and that Professor Thistleton Dyer found a Rhytisma 

 on leaves of Vaccinium at the same time that he collected the 

 Exobasidium, which was not in a sufficiently perfect state for 

 description or identification. The same may be said of a 

 Sphceria or punctiform Rhytisma on leaves of Empetrum nigrum. 



Species not yet recorded in Scotland include Uromyces 

 Trientalis, found on a single leaf from Dr. Dickie, of Aberdeen. 

 It has never been described or recorded, because only this 

 single specimen has been found. Uredo Empetri was found 

 sparingly in North Wales, but there is no reason why it should 

 not be found on Empeti'um nigrum in Scotland. A single 

 example of Mclampsora padl was found within about twenty 

 miles of London, but it is far more probable that it will be 

 found on leaves of Primus padus in Scotland, where Uredo 

 poiphyrogenita occurs, than in the south. Calyptospora Gcep- 

 periiana is a very curious brown fungus, investing the stems and 

 branches of Vaccinium Vitis Idcea, hardly looking like a fungus, 

 but a diseased condition of the tissues ; still it is placed 

 amongst the Uredines, and I have great faith in its being ulti- 

 mately found in Scotland, since it occurs in North Europe and 

 North America. 



There is no reason to suppose that some of Karsten's 

 Finland species may not also be found in these northern parts 

 of the British Isles, or some of the smaller species found by 

 other mycologists in Northern Europe. For instance, Peziza 

 chrysophthalma and Peziza pithya, on small branches of firs, 

 both elegant little orange species, not unlike Peziza calycina. 

 Peziza hirtella and Peziza avicularia on grouse dung, also 

 Ascobolus crenulatus and Peziza Cesatii on the same substance. 

 It seems to me most extraordinary that hitherto no fungus has 

 been found on grouse dung in Scotland, and I believe that it 

 only requires to be looked for, and some one or more forms of 

 Discomycetes will be found. 



There is certainly no scarcity of Pinus sylvestris in Scotland 

 and yet we have no record of such species of Discomycetes as 

 Ombrophila abacina, or Helotium proximellum^ or Desmazierella 

 acico/a, all of which are very likely indeed to be met with, the 

 latter having recently been found in the south. Fir leaves, and 

 the small twigs or bark of firs, are the habitat of numerous 

 species, some of which are still unknown to Britain. 



