DECANDRIA— DIGYNIA. Saxifraga. 279 



22. S. elongella. Long-stalked Saxifrage. 



Radical leaves three- or five-cleft ; those of the upright short 

 shoots undivided or three-cleft; all brisde-pointed, 

 slightly fringed. Primary flower-stalks very long, simple 

 and naked. Calyx pointed. Petals obovate. 



S. elongella. Sm. Tr. of L. Soc. v. 10. 340. Engl. Bot. v. 32. 

 t. 2277. Comp. 66. Don Tr. of L. Soc. v. 1 3. 449 ; but not, it 

 seems, of Donn Cant. ed. 5. 107. 



On moist rocks in the Highlands of Scotland. 



On a rock by the river near Lintrathen, in Angusshire. Mr. G. Don. 



Perennial. June. 



Smaller than the last, of which Professor Hooker, in a note to his 

 Fl. Scot. 132, considers it as a variety. Mr. D. Don on the 

 other hand thinks the elongella perfectly distinct. The lateral 

 shoots are mostly erect, bearing 3-cleft leaves ; but when culti- 

 vated they become prostrate, with chiefly undivided leaves, and 

 some appearance of axillary buds. The iiiflorescence is peculiar, 

 consisting of a terminal, solitary, simple, single-flowered, leaf- 

 less, slightly glandular and viscid stalk, 2 inches long, which, 

 in cultivated plants only, is sometimes accompanied by 1 or 2 

 divided bracteated stalks, from the bosoms of the upper leaves ; 

 but nevertheless the whole bears no resemblance to the panicle 

 of 5. hypnoides. In the calyx and petals indeed there is little 

 diff"erence. The /lower is rather larger, of a pure white. The 

 lateral veins of the petals are not constant. 



23. S. leptophylla. Narrow-spreading-leaved Saxi- 



frage. 



Radical leaves deeply five-cleft; those of the very long pro- 

 cumbent shoots deeply three-cleft or undivided ; seg- 

 ments linear-lanceolate, very sharp, widely spreading. 

 Calyx oblong-ovate. Petals spatulate, undivided. 



S. leptophylla. " Pers. Syn. v. 1 . 490." Don Tr. of L. Soc, v. 13. 

 450. 



On mountains in Wales ; Mr. Macnab. Don. 



Perennial. 



Herb very densely tufted before flowering, and very smooth ; after- 

 wards throwing out many loosely spreading shoots, besprinkled 

 with a few viscid hairs, and destitute of axillary buds. Stems 

 several, erect, 3 or 4 inches high, wavy, polished and nearly 

 smooth, each bearing many drooping whitejlowers, whose stalks 

 are elongated, and furnished with glandular hairs. Segments 

 of the leaves remarkably spreading, bristle-pointed, variable in 

 breadth. Segments of the calyx oblong-ovate, 3 -ribbed, with 

 recurved points. Pet, entire, triple-ribbed. Filaju. white, with 



