APPENDIX B.—DISCOVERIES. 14! 
Festuca loliacea, Huds. (F. elatior x Lolium perenne). 
Forfarshire. Hooker, Fl. Scot., p. 40. 
Festuca rotboellioides, Kunth (Triticum lohaceum, Sm.). 
Angus. Hooker, FI. Scot., p. 45. 
Lolium arvense, With. 
Forfar. Hooker, Fl. Scot., p. 45. 
Lycopodium annotinum, Z. 
Clova. 
Isoétes lacustris, L. 
See Eng. Bot., t. 1084. 
It is scarcely necessary to say that some of the plants he records 
are not natives. 
In addition, Don added several species of mosses to the Scottish 
flora, and all his records of these have been verified, two—Grimmia 
Doniana and Anodus Donianus—being named after him. Mr. H. 
N. Dixon has kindly examined all the specimens in Don’s 
“Herbarium Britannicum,” and finds that, with one exception, that 
of Fontinalis squamosa, which is a variety of F. antipyretica, all are 
correctly named, and he says that they are all undoubtedly British 
species, and some are sufficiently rare and others sufficiently 
inconspicuous to show the collector to have been an extremely 
keen observer. 
A critical examination of a list of Don’s discoveries enables us 
to bring his work into more correct focus, and to obtain a position 
favourable for arriving at a more accurate idea as to the authenticity 
of his records. But it is only fair to remember that at the time 
when Don lived the same precision of locality was not demanded 
of the botanist, nor was the same importance then attached to the 
fact that a specimen should come from the locality printed on the 
label, as is now the case. At that time the specimen itself was 
valued just as a stamp is now valued by the philatelist, and the 
other factors as to where it came from or by whom it was collected 
were to some extent ignored. Therefore we find that Don, even in 
his own herbarium, wrote out the localities of certain species from 
text-books before the plants were obtained; indeed, in some 
instances the place for the plant is still unoccupied. By this 
practice a loophole for error is at once presented. Again, the 
