206 NATURAL HISTORY SOCIETY OF DUBLIN. 
Of Ferns the following are the forms met with: Polypodium vulgare, 
andits varieties acutum and bifidum. P. dryopteris grows in abundance on 
the roadside between Duncrievie and Damhead, and in a few other places. 
P. phegopteris has been recorded from Glenfarg, but it grows near the De- 
van, parish of Fossaway, and near Saline. I did not find P. alpestre, al- 
though it is common in the western part of Perthshire. Lastrea filix-mas, 
and its varieties, pumila, paleacea, and incisa, occur in Glenfarg and else- 
where. L. dilatata and its varieties, nana, dumetora, glandulosa, L. 
foenisecii and L. thelypteris, grow in various places through the county; 
the last named is only recorded from Forfarin Moore’s ‘‘ Nature-Printed 
Ferns,” but I found it and recorded its existence at Aberfoyle, Perth- 
shire, in 1862, and Glenfarg suppled some unmistakeable specimens 
during last summer. Cystopteris fragilis, and its varieties, angustata, 
dentata and Dickieana grow in Glen Farg, not far from General 
Trevelyan’s house. Asplenium adiantum-nigrum, A. trichomanes, and 
A. ruta-muraria are also to be found; but the latter, although exist- 
ing in several places on walls in the south part of the county, is rare 
and in small quantities. I did not find A. alternifolium, but it is 
mentioned as growing on Dunfermline Abbey. Athyrium filix-foemina 
is one of the most abundant of cryptogamic plants, and exists in 
a protean condition; all degrees of development, and many of the 
constant varieties, are to be found in Glen Farg, Devanside, and 
Cleish. Of the varieties plumosum, a magnificent plant, depauperatum, 
an equally fine example, and obtusum, occurred side by side in Glen 
Farg, and one individual, which approached closely in appearance to the 
rare variety, Friezellii, wanting only a little fulness and frilling. This 
plant I transferred to the garden, in order to see what effect culture 
might have in filling its fronds; and it may, when improved in condi- 
tion, be a form at least closely allied to this extremely rare and beautiful 
variety. Several plants were found with forked fronds and occasional 
crested fronds, and pinnee, but no plants of the pure variety cristatum 
have I as yet seen. Var. Rheticum and molle occur in Glen Farg, 
and I found the latter hkewise at Rumbling Bridge. The common Pteris 
aquilina and Blechnum boreale of course are in the usual abundance ; 
and Aspidium lobatum and A. aculeatum I found at Cauldron Linn, 
and near the Bein Inn, Glen Farg. Near the Glen grows at least one 
plant of Osmunda regalis, and Grammitis officinale .completes the cata- 
logue of Ferns. Robertson mentions that Botrychium lunaria and 
Ophioglossum vulgatum grow in Cleish, but I found neither. I searched 
all likely places for Hymenophyllum, and Allosorus crispus, but have 
not succeeded in finding either one or the other; but I have seen speci- 
mens of the latter from Saline Hill, Fifeshire; and Scolopendrium vul- 
gare escaped my notice,although I have been informed that it grows in the 
Glen. This latter Fern is, I think, rather rare and local in Scotland, at 
least in the North and West. It grows, however, according to Rev. Mr. 
Frazer, in the Island of Gigha, where it is called Cneamk na muc-fiahd, 
1. e. tongue of the wild hog; but elsewhere in the Hebrides is rare— 
indeed, I have never found it on any other of the Western Isles. Of Ly- 
