DECANDRIA— DIGYNIA. Saxlfraga. 275 



16. S. hirta. Hairy Alpine Saxifrage. 



Radical leaves rather crowded, five- or three-cleft, pointed, 

 veiny, fringed. Flowers kw, corymbose. Germen half 

 inferior. Calyx acute. Petals obovate, triple-ribbed. 



S. hirta. Donn Cant. ed.5.\07. Engl. Bot. v. 32. t. 2291. Comp. 



66. Don Tr. of L. Soc. i;. 13. 421. 

 S. palmata. Bingl. N. Wales, v. 2. 395 ; from the author. 



On alpine rocks in Ireland, Scotland and Wales. 



On the Galty mountains, county of Tipperary. Mr. J. T.Mackay. 

 In the west part of Scotland. Mr. G.Don. Near TwU dft, in 

 Cwm Idwell ; also on the walls of Dolwyddelan castle, betwixt 

 Capel Cerig and Llanrwst, North Wales. Rev. W. Bingley. 



Perennial. June, July. 



This has the habit of the larger variety of S. ccespitosa, nor is it 

 always more hairy ; on the contrary, my specimens are rather 

 smoother than those of the foregoing. The hirta seems to be fur- 

 nished with longer lateral leafy shoots, and the segments of its 

 leaves are acute, sometimes bristle-pointed, as are likewise those 

 of the calyx. The petals are obovate, not at all orbicular, and 

 their lateral ribs are longer, usually separating from the middle 

 one but a little above its base. These two species nevertheless 

 cannot be thought otherwise than very closely related, and I 

 believe no botanist is, as yet, sufficiently acquainted with the 

 specific differences of Saxfragce, to say whether they are distinct 

 or not. 



17. S. aj^^nif. Involute Alpine Saxifrage. 



Radical leaves five-cleft; those of the trailing shoots mostly 

 three-cleft ; lobes linear, pointed. Segments of the calyx 

 awl-shaped, channelled, pointed, recurved. Petals oblong, 

 inflexed at the edges. 



S. affinis. Don Tr. of L. Soc. v. 13. 418 j according to the author. 

 S. Isevis. Donn Cant. erf. 5. 107. Mackay. 



On mountains in Ireland. 



On the top of Brandon mountain, county of Kerry. Mr. J. T. 

 Mackay. 



Perennial. I\lay, June. 



Herb brigiit green, densely tufted before flowering, afterwards 

 throwing out many procumbent, lax, reddish, distantly leafy 

 shoots, several inclies long ; the whole besprinkled with soft, 

 slender, glutinous hairs. Leaves much elongated and tapering 

 at the base, fringed, and otherwise somewhat hairy, divided 

 about one third of their length into 3 lobes, the lateral lobes, of 

 the radical leaves especially, cloven ; all of them linear, or 

 slightly lanceolate, acute, partly bristle-pointed. Stems 3 or 4 



T 2 



