DECANDRIA. DIGYNIA. Saxifraga. • *97 



but the stem in these figures bears 2 flowers. Root not beaded. 



Flowers white. 



On mountains in the north. Amongst the rocks on the sum- 

 mit of Ben Lawers, Scotland ; first found by Mr. Dickson. 



P.Aug. 



S. Stem-leaves wedge-shaped, alternate, 3-cleft: stem tridactyli'tes 



branched : leaves in very dry situations sometimes 

 undivided. 



Dkks. h. s.-E. hot. 501-Curt. \<19~Walc. Sheldr. 24-#. 

 ox. xii. 9. 31~Ger. 499. 3-Pet. 6'l. &-Scoj>. 1 6'. 4$S* 

 -Blacknv. 212. 



Turns red after flowering. Hairs terminating in globules. 

 Stems forked, in some situations trailing. Root-leaves tapering 

 down into flat leaf-stalks. Stem-leaves sitting, the upper, and 



sometimes all above the first branches, spear-shaped and opposite. 

 Fruit-stalks with single flowers ; axillary. Cup, mouth with d 

 egg-shaped clefts. Petals white, egg-shaped, but little longer 

 than the segments of the cup. 



Var. 2. Stem branched : upper stem-leaves opposite, spear- 

 shaped. 



On the tiles of the shed which covers the mill wheel at Mox 

 hall, Staffordshire. 



Var. 3. Stem unbranched ; all the leaves entire. 



This sometimes happens to small specimens in very dry situa- 

 tions. 



Rue Whitlow-grass. Rue-leaved Saxifrage. Walls, roofs, 



and amongst rubbish. [Very common in Craven, Yorkshire, 

 but rare in Lancashire. Mr. Cai.ey. In the walks at Hatton, 

 near Shiffnal, Shropshire. On the Winnets near Castleton, Der- 

 byshire.] A. Apr. May. 



S. Root-leaves incorporated, strap-shaped, 3-cleft or en- moscha'ta. 



tire: stem-leaves 3 to 5, entire: flowers on long 

 fruit-stalks: whole plant hairy and glutinous. 



J acq. Misc. ii. 21. 21-7- B. iii. 7^2. 2-Gesn.fasc. 6. 31- 



Hall, of use. it. helv. 1. 1. 



Growing in tufts. Leaves a fine green, mostly entire. Stem* 



leaves about 5 ; strap-shaped, rarely cloven. Flovjers form 3 to 



O. Petals pale yellow, not scored. Whole plant odoriferous. 

 Jacq. 



Matted Saxifrage. S. atspitosa. Huns, and Bot. arr. ed. ii ; 

 not S. s&spitosa. Linn. S. pjrenaica. Haller. Mountains above 

 Ambleside, Westmoreland. P. July, Aug. 



i 



