BRYOLOGICAL NOTES FROM THE WEST HIGHLANDS. 809 
soit du systéme végétatif, soit du 1 a seen je ne vois pas d’ailleurs 
que sous aucun rapport il différe plus des autres variétés du B 
arcticum, trouvées soit dans les thees et le Jura, soit en herve, 
que ces diverses variétés ne difiérent entre elles 
ryum arcticum is a very interesting addition to our Moss-flora, 
inner face of the outer peristome teeth are far less numerous and 
distinct than in B. pendulum and B. Warneum. Hence at first 
sight the peristome appears ‘a belong to the Section Cladodium, as 
B. inclinatum, and it needs careful focussing under a high power 
to bring out the real character. Fora detailed aakisntt of the peri- 
Philibert in the Revue Bryologique, &e. The high alpine character 
of the moss and its general features will aioe: its being confused 
with any of our species, except perhaps purpurascens, Which has 
indeed been considered by several are as a variet y of B. ar maar 
The peristome of B. purpurascens is, however, more truly that of 
— the fine papille of the Deak. (outer) surface of the oot 
stome teeth have a tendency to be arranged in horizontal rows, 
peters a very finely striate appearance; and the capsule is usually 
more regular and symmetrical. 
s the name implies, B. arcticum is a boreal species, descending 
into Gesteal Europe only as an inhabitant of the higher parts of 
the Alps, Jura, &c. 
We paid one visit to Ben Lui, confining our search, however, to 
but a small portion of the fine crags on the western side, and with- 
out ascending higher probably than 2500 ft. Although this moun- 
in has been so well worked, I have little doubt. that further 
hours’ careful search, how little space one has actually covered, to 
realize the —— of really fine ground that Ben Lui presents. 
In th area of crag worked by us we i ie among 
other good are Plagiothecium Miillerianum, Seligeria recurvata, 
Orthothecium rufescens (in go ruit), Thuidium dolsoninalial; Tr. 
Philiberti (growing luxuriantly and indeed in abundance); and a 
Weisia (Hymenost lium), before referred to, which is still sub judice, 
but crac wth the least is a well-marked and undescribed variety of 
. curvir 
_ Just belie we left Tyndrum Mr. G. C. Druce came on a short 
far from being easily approsehable, Even with the help of @ trap 
so far as the road served us, it was a long tramp and a somewhat 
wearisome ol to the foot of ele seountalss on the shore of Loch 
