72 
LEJEUNEA HOLTII, A NEW HEPATIC FROM 
KILLARNEY. 
By Ricuarp Spruce. 
(Concluded from p. 39). 
The Flora of the a Isles can now boast of the following 
thirteen species of Lejeunea :— 
1. L. Mackaii ig x 8. L. prversttoza Spruce. 
2. L. ovata Tay . L. ulicina Tayl. 
a. 2. hamatifoa Riagig ). 10. L. minutissima (Sm.). 
4. L. Hor : 11. L. microscopica Tayl. 
BL. flava (' ‘Sey 12. L. calcarea Lib. 
6. L. patens Lindberg. 18. L. Gtihyptrifolia (Hook.). 
7. L. serpyllifolia (Disks.). 
All these — grow in that south-west corner of Ireland of 
which Killarney may be regarded the centre, having the Atlantic 
Ocean to west and south, the Shannon to north, and the sources of 
e Lee and of the Kenmare River to east; roughly speaking, 
between 514° and 524° N, lat., — Bee nd 103° W. long. The 
three species whose names are in roman type—L. serpyllifolia, L 
minutissima, and L. dalbeed extend across the whole of Europe 
not enumerate a single Lejeunea. In Europe, L. minutissima grows 
as far south as 40°N. lat., at least, in Portugal, but does not get so 
h as Scandinavia, In North America this species and L. 
two species paca names are in capitals—L. Ho sts and L. diversi- 
loba—are (so far as hitherto known) absolutely confined to Killarney. 
The remaining eight specie es, whose names are in italics, are limited 
to the British Isles, except that two of them—L. ovata and L. 
ulicina—reach across the channel into the westernmost parts of 
France; nowhere, however, so far east as to the meridian of 
London.* 
Ten, therefore, out of the ape Lejeunee of our list belong to 
what we may call the Britannic type, being (with the slight ex- 
ceptions above-mentioned) absoltely confined in the north tempe- 
rate zone to the British Isles, so that if all, or any of them, are 
derivative species, they could not te been derived from continental 
Europe. Their ascertained distribution in Britain itself is very 
was found by gee in 1845 at Cauterets, in the Pyrenees 
Qing: x ? v -), and I know not that it has been gathered elsewhere on the 
Paap ge oneg 5 —— na grows pe near the coasts of Normandy and Bri prone 4 
but does not seem to spread eehge ae = to Jong. 0° 30’ W. 
