254 Tlie Scottish Naturalist. 



mon. P. nemoralis, L., Strome. P. pratensis, L., common. 

 P. trivialis, L., Strome. Cynosurus cr (status, L., Kinlochewe, 

 not common. Dactylis glomerata, L., Kinlochewe. Festuca 

 ovina, L., common. F. duriuscida, L., Ben Eay. F. arenaria, 

 Osb., Loch Duich. Bromus giganteus, L., Strome. B. mollis, 

 L., Strome. Triticum canhium, Huds., Strome. T. repens, L.. 

 Dornie. T. acutum, D.C., Loch Duich. Lolium perenne, L., 

 Dornie. f L. italicum, Br., Kinlochewe. Nardus stricta, L., 

 common. Pteris aquilina, L., common. Cryptogramme crispa, 

 Br., Scuir Ouran. Bomaria Spicant, Desv., common. Asplenium 

 JRuta muraria, L., common. Asplenium Trickomanes, L., com- 

 mon. Asplenium Adiantum-nigrum, L., common. Athyrium 

 FilLr-fccmina, Bernh., common. Cystopteris fragilis, B., Glen 

 Shiel. Aspidium lobattim, Svr ., Strome. Nephr odium Filix-mas, 

 Rich., Glen Docharty. N. spinulosum, Desv., Scuir Ouran. JST. 

 dilatatum, Desv., common. 2V. nanum, Newm., Strome. N. 

 Oreopteris, Desv., common. N. wmidans, Back, Glen Docharty. 

 Polypodium vulgar e, L., Strome. P. Phegopteris, L., Strome, 

 &c. P. Dryopteris, L., Loch Clare. Osmunda regalis, L., Dun- 

 craig. Lycopodium clavatum, L., Carnasong, &c. B. alpinum, 

 L., common. B. complanatum, L., Scuir Ouran. B. Selago, L., 

 common. Belaginella Seloginoides, Gray, Glen Shiel. Isoetes 

 lacttstris, L., Loch Maree. Equisetum arvense, L., Kinlochewe. 

 E. palustre, L., Loch Clare. E. sylvaticum, L., common. E. 

 limosum, L., Loch Coulin. Nitella opaca Br., Loch Maree. 

 Total number of species and varieties observed, 374. 

 Species previously recorded, ... ... 10 



Introduced, marked +, 



Phanerogams not previously recorded, 



Filices, &c, 



Varieties, 



24 



296 



28 



[6 



374 



ON CERTAIN MOSSES OP THE GENUS DICRANUM. 

 By Dr. JAMES STIRTON, F.L.S. 



DR. BRAITHWAITE, in his admirable work on British 

 Mosses, has rather summarily and, in my opinion, arbi- 

 trarily disposed of a difficulty which twenty years ago exercised; 



