274 DECANDRIA— DIGYNIA. Saxifraga. 



S. tridactylites groenlandica, cauliculis valdfe foliosis. Dill. Elth.337. 



<. 253./. 329. 

 /3. S. decipiens. Ehrh. Herb. 5. Beitr. v. 5. 47 and 175. " Sternb. 



Saxifr.55. t.23." 

 S. csespitosa. Fl.Dan.t.7\. Gunn. Norveg.v.2. \35. t.7.f.3,4. 

 S. petraea. With. 890. 

 S. palmata. Fl. Br. 456. Comp. 66. Engl. Bot. v. 7. t.455. 



On the loftiest mountains of Wales and Ireland. 



a. On the rocks of Twll du, in Cwni Idwell, North Wales. 

 Mr. Griffith. On the lofty summit of Brandon mountain, county 

 of Kerry. Mr. J. T. Mackay. 



/3. On the rocks of Cwm Idwell, but in more accessible places. 

 Mr. Griffith. On the Galty mountains, Tipperary. Mr. J. T. 

 Mackay. 



Perennial, May, June. 



Herb densely tufted, very variable in luxuriance, number ofjlowers, 

 and degree of hairiness. Radical leaves numerous, more or less 

 crowded, fringed with soft glutinous hairs, such as are generally 

 likewise dispersed over both surfaces ; their lower half almost 

 linear, strongly ribbed ; upper deeply divided into 3 or 5 ob- 

 long, obtuse, pointless segments, made too acute in Engl. Bot. 

 t. 455. Leaves of the flowering stems few, scattered, rather 

 more acute, either undivided or three-cleft, diminishing into 

 hracteas. A few of the very lowest leaves, on the radical tufts, 

 are also undivided. Stems solitary, erect, round, rather hairy 

 and viscid, slightly leafy ; in a only 2 or 3 inches high, and 

 bearing 1 or 2, very rarely 3,Jlowers; in /3 often a span in 

 height, corymbose, with 5 or 6. A root brought by Mr. Mackay 

 from Brandon mountain, and rendered luxuriant by culture, bore 

 9Jlowers. This is mentioned in Rees's Cyclopcedia under S. hirta, 

 but it certainly belongs to caspitosa. The calyx of this species, 

 in every state, is half inferior ; its segments broad, obtuse, point- 

 less, sliglitly fringed, glandular, but scarcely hairy, on the sur- 

 face. Germen much more hairy, hemispherical. Pet. orbicular, 

 or obovate, rounded, obtuse, entire, white, with a central green 

 rib, sending off 2 curved lateral ones about the middle, none of 

 them quite reaching to the summit. Stigmas downy. 



When the larger variety of this species was published in Engl. Bot. 

 I was unacquainted with Ehrhart's S. decipiens, whose name I 

 therefore could not adopt. I have not quoted Professor Hooker, 

 having seen no Scottish specimen of indubitable ccespitosa, and 

 he has, in my opinion, confounded many things under that name. 

 S. grcenlandica is, in the Cyclopcedia, only suspected to be a 

 variety of ccespitosa. I now believe them to be one and the 

 same. Whether Mr. Don's cundensata, Tr. of L. Soc. v. 13. 448, 

 be a smooth variety of this, or, as the author says, allied to 

 hypnoides, I have no means of judging, but in so very great a 

 doubt, I must leave it undetermined. 



