56 The Scottish Naturalist. 



of the discoverer precludes the possibility of any more definite information 

 being arrived as to the exact place of growth. 



^'' Mijicrium Hcbridarum (Sch,)j detected for the first time in North Uist, 

 by the late Dr. C. Smith of Inverary, has again been found in great luxu- 

 riance in the original station. A second station has been revealed 

 by the Rev. Dr. H. Macmillan on the shores of Loch Coruisk in Skye. 

 The only other stations for it are in the Canary Islands and Azores, from 

 the latter of which I have it in fruit gathered by Mr. Moselcy of the Chal- 

 lenger Expedition. 



"A slender clue is given in this instance, as well as in another already 

 stated, as to the former disposition of the land along the great Mid 

 Atlantic ridge ; but I forbear to follow it up, although although there are 

 other botanical examples which go to strengthen the theoiy of a continuous 

 land-surface along this ridge or bank. 



" 5th. Other instances of restricted areas of growth might be mentioned ; 

 but as such are common to other districts I refrain from multiplying exam- 

 ples. Three others may, however, be adduced as indicating what may be 

 termed initiatoiy stages of specific development, in marked contrast to those 

 previously given, viz., OrthotricJmm Shmvii on an old ash-tree near Dailly, 

 and Canipylopiis S/unoii from North Uist, both due to Dr. J. Shavr, now of 

 Cape Town, South Africa. There is little doubt that these are offshoots from 

 O. ciiptilatum on the one hand and C. alpimis on the other, and, accordingly, 

 tend towards the Darwinian theory of development, more especially 

 as their botanical characters are quite appreciable, &c. A third is 

 Didymodoii Daldinianus, clearly an offshoot from D. cylindriciis, which, 

 besides, is found sparingly throughout our Highland glens, and in fruit 

 in two of these, viz., Campsie, the original station of Dr. Taylor, and 

 in Glen Roy, where it is comparatively abundant. D. Daldiniamis is a 

 luxuriant moss, and on the hills behind Dunoon and Kilmun has been 

 gathered in huge tufts with stems 3 or 4 inches in length, in this respect 

 at least quite a contrast to the other. Fruiting specimens of this moss 

 have been found on Ben Ledi and near Crianlarich, " 



The lists ol Mosses and Lichens are by Dr. Stirton, who also 

 (in conjunction with IMr. R. H. Paterson), catalogues the 

 Hepatic?e, and the author's name is sufficient guarantee that 

 the lists are extensive and accurate. The mosses include 

 upwards of 520 species (about 453) and varieties (67), of 

 which about 390 are from Clydesdale and the rest chiefly from 

 Perthshire (Ben Lawers, &:c.) In like manner the lists of 

 Hepatica) and Lichens are large ; in the latter group, every 

 s])ecies that have come under the personal observation of the 

 compiler being included. 



Mr. R. H. Paterson is responsible for the very extensive 

 list of Fungi, whicli "have been gathered in a very few locali- 

 ties," all in Clydesdale. The total number of species mentioned 

 is about 1670, the genus Agaricus being represented by 267. 



