9 
a! 
66 SALICINEA. [Populus. 
From sea-level, to 800 feet on rocks beside Lough Crinkaun 
near the Upper Lake, Killarney (Phillips). 
First record in 1901: R.W S., Topog. Bot. 
There can be no reasonable doubt that the Aspen is 
native in most of its stations about the Killarney lakes, 
where it occupies much the same position on the sandstone 
that Pyrus rupicola does on the limestone. It appears to be 
native also in Glenflesk and in some of its Caragh Lake locali- 
ties but elsewhere in the county it has most probably been 
planted. 
Although usually but a small tree, the Aspen occasionally 
attains to very considerable dimensions in Kerry. A tree 
measured in 1904 on Brown Island, Lower Lake, Killarney, 
just exceeded four feet in girth at three feet from the ground, 
while another near Glena Cottage, measured the same year, 
was 6 feet 8 inches in girth at the same height from the 
ground and was about 60 feet in height. 
[P. icra Linn. Black Poplar. This tree appears to be 
rarer in Kerry than the following species, P. serotina, and 
like it to occur only where it has been planted. It is much 
more commonly seen in the north of the county than in the 
south being rather frequent about Tarbert, Ballylongford, 
Listowel, Lixnaw, Ardfert, Tralee, &c. In the south it has 
been noticed sparingly in two or three places about Kenmare 
and Killarney, one fine tree growing about half a mile from 
the latter town near the Muckross road and another on 
Cloghereen green. It has also been seen growing by streams 
in a few spots in the Dingle peninsula and appears to be 
thinly scattered over the rest of the county. All the trees 
so far examined by Mr. R. A. Phillips and R.W.S. belong 
to the var. betulifolia with pubescent twigs, the usual form 
in the British Isles. 
The Lombardy Poplar, regarded by Prof. Henry as only 
a sport of P. nigra, is not a common tree in Kerry but has 
been noticed in several localities in all of which it has been 
planted.) 
[P. szrotTina Hartwig. P. nigra x deltoidea. This con- 
spicuous tree, planted in every case, is thinly scattered 
throughout the county usually along roadsides, in hedges or 
in damp places. Judging by its wide distribution and the 
size to which it has attained it must have been introduced 
into Kerry many years ago. It is a hybrid of P. nigra and 
P. deltoidea neither of these species being native in Ireland 
