283 ON THE BlUTISH DACTYLOID SAXIFRAGES. 



Brandon Mountain in 1829. The Arctic S. unijlora, R. Br., in Parry's 

 first Voy. App. p. 275, is, to my eyes, just the plant of the original 

 figure. The Pyrenean plant which has been called grcealandica, (De 

 Cand. Fl. Pranc. iv. 376; Gren. et Godr. i. 6i9. = S. Iratiana, P. 

 Schultz, Archiv, ii. 176, Exsicc. 1254; S. melana, Boiss. Diagn. ii. 

 fasc. ii. p. 66 ; S. pyrenaica, Koch, Deutsch. PI. iii. 151, non Vilkrs), 

 is, as Dr. Bosvvell Syine indicates, a clearly separable form approaching 

 exarata and nmscoides by its considerably smaller flowers, and more 

 rigid, viscid, strongly-nerved, persistent, densely-imbricated leaves, the 

 upper ones ascending, and the lower ones reflexed, so that about the 

 middle of the stems the two sets, instead of being regularly imbricated 

 as in all our English forms, abruptly part company. 



2. Of the Irish plant, figured by Smith in ' English Botany ' t. 2291, 

 under the name of hirla, I have examined a large series of wild and 

 cultivated specimens, gathered by Dr. jMackay, llev. W. T. Bree, and 

 Professor Babington. The ' English Botany ' figure is well drawn, but 

 it is from a cultivated specimen, and makes the plant look more differ- 

 ent from caspitosa and decipiens than it really is. In this the copious 

 barren shoots lengthen out (in the wild specimens 1 or 2 inches, in the 

 cultivated 3-4 inches) beyond the rosettes at the base of the flower- 

 stems ; the leaves are less fleshy in texture than in most of the Arctic 

 specimens of ccespitosn, but scarcely more so than in the Scotch plant, 

 and are thinly furnished with short, spreading, grey, cottony hairs ; the 

 fully-developed leaves are 8-9 lines long, with 3-5 ligulate lobes, the 

 central one 3-4 times as long as broad, never so decidedly blunt as in 

 ca^spitosa, and sometimes subacute ; the flowering-stem is much more 

 lengthened out, with usually 4-6 flowers in a very lax corymb, and 

 the calyx-tube in fruit is turbinate, with deltoid, bluntish, or subacute 

 lobes. Placing the cultivated specimens of the Irish plant by the side 

 of the figure in Sternberg's monograph (t. xxiv.) of S. Sternbergii, 

 Willd. Euum. Hort. Berol. i. p. 462, they correspond so precisely 

 that the figure might well have been drawn from the Kerry plant. A 

 specimen from Dr. Romer, sent as S. Sternbergii, dift'ers only from the 

 Kerry plant by having the lobes of the leaves rather shorter. Two 

 wild specimens from the Hartz, sent by Professor Mertens as " S. de- 

 cipiens, Ehrh. ; S.palmata, Smith ; 8. petraa, Roth," agree thoroughly 

 with the Irish specimens ; and of a series of five specimens, sent by 

 Count Sternberg as " *S. villosa, Willd.; S. paliiuita, Panzer;" three, 



