SAXIFRAGACE^. 79 



the petiole much shorter or indistinct ; the uppermost and the 

 bracts entire, strapshaped. Plowering-stems terminating in a few- 

 flowered corymbose cyme. Calyx-segments oblong-ovate, blunt, as 

 long as the calyx-tube ; calyx-tube in fruit half oval-ovoid, longer 

 than broad. Petals obovate, twice as long as the calyx-segments, 

 or more. Capsule one-third superior. Stems, pedicels, calyces, 

 and margins of the leaves with short gland-tipped hairs. 



On Alpine rocks. The only specimens I have seen that I 

 can refer to this species is one in Mr. Borrer's herbarium 

 at Kew, collected by the late Mr. Joseph Woods on Een-Nevis ; 

 and one or two in that of Mr. H. C. Watson, from Ben- Avon, on 

 the confines of the counties of Aberdeen and BanflP, gathered 

 by Dr. Martin Barry. The S. " csespitosa " from Ben-na-bourd is 

 also likely to be the true plant, but I have not seen specimens 

 from that locality. 



Scotland. Perennial. Summer. 



Stems, exclusive of the flowering portion, 1 to 2 inches long, 

 rather thinly clothed with decayed leaves at the base, then thickly 

 clothed with decayed leaves, and, lastly, with a compact rosette of 

 green leaves, which are f to f inch long, with the segments ^ to 

 5 inch long. Plowering-stems 1 to 4 inches long, with few leaves 

 unbranched except in large specimens, and then only towards the 

 apex. Flowers 1 to 5, on pedicels generally shorter than the calyx 

 in the terminal flower and longer in the lateral flowers of the cyme, 

 f inch across, white. Sepals very blunt, erect or slightly recurved 

 at the points, frequently tinged Avith purple. Capsule J to f inch 

 long, more than half of it adhering to the calyx, the segments of 

 which rise above the point where the division between the two 

 short sub-erect beaks commences. Plant clothed with very short 

 hairs tipped with globular glands. 



The true S. csespitosa of the Linnsean Herbarium appears to be 

 an Arctic or sub-Arctic plant, frequent in Scandinavia, Iceland, 

 Greenland, &c., but not occurring in Germany. S. Iratiana, 

 P. Schultz (S. Gronlandica, D. C), which occurs on the Pyrenees, 

 appears to be a sub-species of the present plant, difi'ering in the 

 shorter, more rigid, and more spreading leaves, the dead ones re- 

 maining attached, so that the divisions of the rootstock resemble 

 bottle-brushes ; the leaves also are thicker in consistence, and their 

 segments are more spreading, and generally more numerous ; the 

 sepals are generally tinged with a deeper purple ; the petals are 

 shorter and broader, and the gland-tipped hairs on the plant con- 

 siderably longer ; the calyx-tube in fruit is shorter and more swollen 

 at the base. 



Ti(fted Saxifrage. 



