ATLANTIC SPECIES 17 
Plagiochila punctata extends further inland than the 
others, reaching to Killin. I should have felt inclined to 
include Microlejeunea wlicina here. It is a western 
species in Scotland, extending inland to the Trossachs, but 
it has been found in several places in the centre of Europe. 
It prefers a drier and less sheltered situation than the un- 
doubted Atlantic species of its family, and is probably of a 
more robust constitution. 
4, Species common on the west coast, continuing frequent 
in some parts of Central Scotland, but becoming very rare 
toward the east coast : 
Metzgeria hamata. Plagiochila spinulosa. 
Gymnomitrium crenulatum. Saccogyna viticulosa. 
Lepidozia Pearsoni. Pleurozia purpurea. 
Scapania gracilis. 
5. Subalpine and alpine species common to the western 
watershed and the Eastern Grampians: 
Gymnomitrium crenulatum. Herberta adunca. 
Marsupella Boeckii. Scapania gracilis. 
Jamesoniella Carringtoni. S. ornithopodioides. 
Anastrophyllum Donianum. 
Anastrophyllum appears to have its headquarters in the 
Eastern Grampians, unless further search shows this to be in 
Sutherland. Herberta seems to be confined in the Eastern 
Grampians to the Forfarshire hills. The Marswpella is a 
minute species with its distribution very imperfectly 
known. The others are much more plentiful on the western 
watershed. One recent addition to our flora, Lophozia 
atlantica, has been found only in a few localities. It cannot 
be classed at present in any of the above divisions. 
Comparing the Atlantic species in Scotland with those in 
England and Ireland as regards their distribution, we find : 
1. Species which occur in Scotland but have not been 
found in England and Wales: 
Jamesoniella Carringtoni. Mastigophora Woodsii. 
Anastrophyllum Donianum. Radula Carringtonii. 
Acrobolbus Wilsonii. Pleurozia purpurea. 
Leptocyphus cuneifolius. Lejeunea Maevicar. 
TRANS. BOT. SOC. EDIN. VOL. XXV. 2 
