DECANDRIA-DIGYNIA. Saxifraga. 271 



Herb nearly smooth, smaller and more delicate than the last. 

 Root scaly, like that of a lily in miniature. Stem from 4 to 8 

 inches high, slender, leafy, seldom bearing more than one flower, 

 though often divided towards the upper part into several weak, 

 leafy and bulbiferous branches. Leaves kidney-shaped, broadly 

 lobed, almost palmate, stalked, alternate ; some of the upper 

 ones sessile, ovate, and nearly entire ; most of those on the 

 stem attended by purplish, aggregate, bulbs, or buds. Flower 

 often drooping, white, on a terminal downy stalk. Cal. entirely 

 inferior, with oblong, bluntish, downy, viscid segments. Pet. 

 obovate, triple-ribbed, abrupt, or slightly notched at the end. 

 Stigmas capitate, downy. 



11. S. rivularis. Alpine Brook Saxifrage. 



Leaves palmate, stalked ; the uppermost spatulate. Stem 

 with few flowers. Root fibrovis. Germen half inferior. 



S. rivularis. Linn. Sp. PL 577. Fl. Lapp. ed. 2. 142. t. 2. /. 7. 

 fViltd. V. 2. 652. Fl. Br. 4.')4. Engl. Bot. v. 32. t. 22/5. Don 

 Tr. ofL. Soc. V. 13. 367. Hook. Scot. 130. Fl. Dan. t.WS. 



About alpine rivulets, and in wet fissures of rocks, on the moun- 

 tains of Scotland. 



On Ben Nevis. Dr. Tojvnson. Near the lake, in the ascent of 

 Ben Nevis ; also on Ben Lawers. Mr. D. Turner and Professor 

 Hooker. At Loch Rannoch j Mr. Sommerville. Hooker. 



Annual. June, July. 



Root fibrous, somewhat creeping ; according to Mr. Don, annual. 

 Herb an inch or two in height, bright green, a little succulent, 

 smooth, except a few loose glutinous hairs on the upper part of 

 the stem, which is leafy, seldom branched. Leaves with 3 or 5 

 lobes ; the upper ones often ovate, or roundish obovate, undi- 

 vided ; all on longish stalks. Fl. few, small, white, or reddish, 

 on stalks of various lengths, Cal. half inferior, with ovate, 

 somewhat spreading, segments. Pet. obovate, but little longer 

 than the calyx. Anthers curiously reticulated, or dotted. Styles 

 short. Stigmas capitate, and I believe smooth. 



12. S. tridactylites . Rue-leaved Saxifrage. 



Leaves wedge-shaped, with three or five segments ; the up- 

 permost undivided. Stem panicled, leafy. Stalks single- 

 flowered, alternate. Germen inferior. 



S. tridactylites. Linn. Sp. PI. 578. mild. v. 2. 654. Fl. Br. 454. 



Engl. Bot. V. 7. i. 501. Don Tr. of L. Soc. w. 13. 441. Curt. 



Lond.fasc. 2. t. 28. Fl. Dan. t.l5\7. Ehrh. PI. Off. 444. 

 S. n. 986. Hall. Hist. v. I. 422. 

 S. verna annua humilior. Tourn. Inst. 252. Raii Syn. 354. 



