LEJEUNEA HOLTIL, A NEW HEPATIO FROM KILLARNEY. 81 
Azores, and has a vegetation almost entirely derived from the 
Antilles and the coast of the Southern States, from the former 
of hepatics I have only a few fragmentary specimens, all so near 
species inhabiting the Windward Antilles that they are probably 
modified forms of them; but not one of them corresponds to any 
of our Britannic species. 
From what precedes, I conclude that no existing agency is 
he g 
the last glacial period, I reply that, granting even the existence of 
of 40° i 
a universal ice-cap down to the latitude in America and 50° 
mosses of Killarney might. even enjoy a longer summer than this, 
for the gulf-stream laves both sides of the south-western angle of 
eland, and its tepid waters would exert great melting power on 
the ice-bound coast, preventing at the same time any formation of 
Ice in the sea itself. a : 
y main object in this disquisition having been to account for 
the existence and dispersal of certain Lejeunce peculiar (at least in 
Europe) to the British Isles, I have only alluded in passing to other 
eryptogams whose head-quarters are at Killarney, whence they seem 
to have been dispersed to other parts of the islands—indeed are 
apparently still undergoing dispersal, in rare cases even to adjacent 
parts of the continent. But there are certain Radule which I can- 
not pass over without mention. dula voluta, one of Taylor's 
numerous discoveries, is so neat the Mexican R. Xalapensis that 
Lindberg holds them identical. The latter is considered by Stephani 
not distinct from the Andine R. ramulina. I have gathered two 
out of the three species, and believe them all three distinct, though 
acknowledging their close relationship. aquilegia Tayl. 
comes so near the New Zealand R. physoloba Mont. that even 
Taylor himself was latterly inclined to regard them identical. 
Their differences are rather recondite, but I hold them specific. 
 Journan or Borany.—Vow. 25. [Mar., 1887.] G 
