96 SAXIFRAGEA. [Saxifraga. 
This Saxifrage is the most common alpine plant in Kerry, 
and descends on the mountains there to a lower level than 
elsewhere in the British Isles. The large viviparous form 
found by Isaac Carroll in 1875 on the Cork side of Hungry 
Hill, was still growing there in 1894, and was seen on the 
Kerry side of this mountain as well. 
8S. Geum Linn. 
Districts I. I. WI. IV. V. VI. VU. — — 
Native. Damp rocky and shady places especially in 
mountain districts. Rather common and locally abundant 
in the south and west of the county, absent from the north 
and, generally, from the limestone. Peren. May—early 
July. Calcifuge A. 
I. II. IT. IV. & V. Rather common and usually abundant 
where it occurs.—VI. Rather common in the south of this 
District, its northern limit here being roughly defined by the 
northern slopes of the Paps Mountain, the Horses’ Glen on 
Mangerton, Torc Waterfall, and the southern shore of the 
Muckross Lake.—VII. Rather sparingly in the Gormagh 
cliffs, Slieve Mish range, south-west of Blennerville : R.W.S. 
From sea-level, to 2,000 feet in the Horses’ Glen, Manger- 
ton, to 2,100 feet on the Reeks (R.W.S.), to 2,650 feet on 
Caherconree, Slieve Mish (Hart), and to 3,000 feet on 
Brandon (&.W.S.). 
First found in 1699 by Lhwyd—there is a specimen in 
Buddle’s Herb. (Herb. Sloane CX XIV, 17) in the British 
Museum labelled “A. D. Lhwyd in Hibernia collect.” 
First record in 1806 by Mackay, “‘ Sparingly on Connor 
Hill near Dingle and on Ture Mountain near the waterfall, 
1804”: Mackay Rar. 
As the Robertsonian Saxifrages in Kerry form one of ° 
the most characteristic and puzzling groups in its flora, a 
somewhat lengthy investigation of the many forms met 
with in the county is necessary. 
It has long been the present writer’s conviction after 
many years close examination of these Saxifrages in their 
natural surroundings, that not only do S. Geum and S. 
umbrosa hybridise freely with one another, but that the 
resulting hybrids freely cross-fertilise with each other and 
with the parents, so that there is now growing naturally in 
Kerry an almost unbroken series of hybrid forms connecting- 
typical S. Geum with S. umbrosa. This opinion has been 
quite recently confirmed by the results of the elaborate 
experiments undertaken by Prof. H. Dixon, F.RB.S. of Trin. 
