466 Mr. Ch. C. Babington on the Robertsonian Saxifrages. 



Duchartre's ^ Fl. Pyreneenne/ is precisely similar to the' above. 

 This form is my S. umbrosa a. crenata. 



Plate IV. fig. 4. (the var. a. of Mackay, from his cultivated 

 Irish specimens^) is considered by my friend Mr. J. T. Mackay 

 as the typical form of the species, and, " identical with the London 

 Pride of the gardens '' and the Pyrenean plant, has the margin 

 crenate- serrate. A specimen, fig. 2 (" S. umbrosa^ L. Hab. in 

 montibus prsesertim altissim. copiose. — Pefiaflor, 11 Jul. — Pico 

 de Arvas, 14 Aug.^^ " Durieu PI. Selectee Hispano-Lusitanicse. 

 Sec. 1. Asturise. Anno 1835 coUectse.^^ No. 330.), is the same va- 

 riety found in the north of Spain. They are denominated by me 

 var. /8. crenatO'-serrata. 



Plate IV. fig. 5. is the var. ^. of Mackay, var. 7. punctata j 

 Bab., midi Sax. punctata of Haworth and Reichenbach. Gathered 

 at Killarney, Ireland, in 1841. 



Plate IV. fig. 6 and 7. represent Mackay^s var. 7. serrafifoUa, 

 my var. S. serratifolia, and the Sax. serratifolia of Mackay (for- 

 merly) and Reichenbach. 



Saxifraga Geum. 



Plate IV. fig. 8. is the plant of the Pyrenees ; it is taken from 

 a specimen marked " S. Geum, L. Au Pas de Roland prope It- 

 satou. Pyr. occid. 1831.^' Endress. Here the leaves are crenate, 

 or even occasionally have the crenatures so much flattened as to 

 become almost retuse. I believe that nothing like this has been 

 seen wild in Ireland. 



Plate IV. fig. 9. is the Irish Sax. Geum from Connor Hill near 

 Dingle, county Kerry, 1841 ; and fig. 10 is a plant with remark- 

 able leaves from Turk Waterfall near Killarney. Here the leaves 

 are crenate-dentate (fig. 9), or dentate (fig. 10), thus presenting 

 the same difibrence from the Pyrenean plant which was seen in 

 Sax, umbrosa. 



Saxifraga hirsuta. 



Plate IV. fig. 11. with a crenate margin, and fig. 12 and 13 

 with a dentate margin, represent the corresponding forms of Sax. 

 hirsuta. The first (fig. 11) is from the " Pyrenees,^' and was ob- 

 tained from the herbarium of Dr. Leo of Metz : the others are 

 Irish. Fig. 12 from the Gap of Dunloe, Killarney, 1841, the ori- 

 ginal Irish station. Fig. 13 from Connor Hill, county Kerry, 

 1841. 



March 5, 1844, St. John's College, Cambridge. 



