DECANDRIA-DIGYNIA. Saxifraga. 277 



On alpine rocks in Ireland. Mr. J. T. Mackay. 



Perennial. 



"Herb green, densely tufted; very smooth before flowering; subse- 

 quently besprinkled with long viscid hairs. Shoots u[)right, short. 

 Stems straight, 3 inches high, leafy, bearing 2 or 3 \\\\\ie flowers. 

 Radical leaves crowded, o -cleft, palmate ; those on the shoots 

 3-cleft, scarcely shorter than their very broad base, or foot- 

 stalk ; segments lanceolate, blunt, incurved. Stem-leaves pal- 

 mate; upper ones undivided. Cal. as \ve\l as the Jlower-stalks 

 furnished with glandular hairs ; its segments broadly ovate, 

 acute, without a bristly point. Pet. roundish, cloven at the end 

 simply triple-ribbed," 



Such is Mr. Don's description of this plant, of which I have seen 

 no specimen. The notched petals, and long inflexed segments 

 of the leaves, aj)pear to indicate a distinct species, 



20. S. denudala. Smooth Grampian Saxifrage. 



Radical leaves five-cleft ; those of the upright shoots three- 

 cleft; segments linear-awl-shaped, acute, bristle-pointed, 

 smooth. Segments of the calyx lanceolate, minutely 

 pointed. Petals obovate, cloven. 



S. denudata. Bon Tr. of L. Soc. v. 13. 424. 



In the Highlands of Scotland. 



On the Grampian hills in Angusshire. Mr. G. Don. 



Perennial. 



" 7/(67 6 very smooth, bright green, forming small dense tufts. Shoots 

 very short, crowded, erect, densely leafy. Stems erect, an inch 

 and half high, purplish, slightly furnished with glandular hairs, 

 and bearing a few leaves, with 1 or 2 flowers. Leaves fleshy and 

 shining ; the uppermost undivided. Fl. white, bell-shaped, 

 Cal. with a few glandular hairs ; its divisions lanceolate, each 

 with a small reflexed point. Pet. obovate, with 3 simple straight 

 ribs ; nicked at the point. S/om. yellowish green. Anth. bright 

 yellow." 



I should suspect this to be a variety of the last, but not having 

 seen it, 1 cannot controvert Mr. Don's opinion. 



21. S. hypnoides. Mossy Saxifrage, or Ladies' 

 Cushion. 



Radical leaves three- or five-cleft ; those of the long, pro- 

 cumbent shoots undivided ; all bristle-pointed and fringed. 

 Segments of the calyx ovate, pointed. Petals obovate. 

 Stigmas nearly smooth. 



S. hypnoides. Linn. Sp. Pl.r,79. Willd. v. 2. 658. FL Br. 457. 

 Engl. Bot. V. 7. t. 451. Don Tr. of L. Soc. r. 13. 447, Freeman 



