1899-1900.] Second Bryological Excursion to Ben Lawers. 75 
after a long weary tramp through rough heather, reached the 
top, when rain came on again, and I had to beat a retreat. 
Reaching camp, it began to thunder, and rain fell in torrents, 
so instead of waiting till night, we took the mid-day train 
home, which we reached in a rather moist condition. My 
moss collecting was not such a success as I expected it to be, 
but nevertheless I got some good things. Altogether, in my 
three days at Ben Lawers I gathered over 250 species and 
varieties of mosses and hepatics. 
I append a classified list of all the mosses I have collected 
on Ben Lawers and neighbourhood, which may prove a guide 
to others as regards what to look for. Of course I have not 
got all the mosses that grow there. 
List OF MOSSES COLLECTED ON BEN LAWERS AND 
NEIGHBOURHOOD, JUNE 1898 AND JUNE 1899. 
ACROCARPOUS MOSSES. 
Sect. I. ScuistocaRrr. Polytrichum gracile. 
Fam. Andrecacee. 
Andreza petrophila. 
var. acuminata. 
] 
alpina. 
var. compacta, ~ 
— flavicans. 
Rothii. 
var. frigida. 
— hamata. 
nivalis, 
Sect. II. Srmcocarrt. 
Fam. Buxbaumiacece. 
Buxbaumia aphylla. 
Fam. Georgiacee, 
Georgia pellucida. 
Fam. Polytrichacec. 
Catharinea undulata. 
Oligotrichum incurvum. 
Polytrichum aloides. 
urnigerum. 
alpinum, 
sexangulare, 
attenuatum. 
piliferum. 
strictum. 
commune, with two or three vars. 
Fam. Fissidentacee. 
Fissidens osmundoides. 
taxifolius. 
adiantoides. 
Fam. Leucobryacec. 
Leucobryum glaucum. 
Fam. Dicranacec, 
Pleuridium subulatum. 
Ditrichum homomallum, 
var. zonatum., 
subulatum. 
flexicaule. 
var. densum. 
Swartzia montana. 
Dicranella heteromalla. 
curvata. 
crispa. 
Anisothecium squarrosum. 
crispum. 
Brachydontium trichodes, 
