SAXIFRAGE TRIBE. 243 



inches high, with rather large, white flowers, which 

 grow in a compact head. 



4. jS. aizoides (Yellow Mountain Saxifrage). Leaves 

 very narrow, fleshy, fringed ; flowers in a leafy panicle. 

 Wet places in the mountains ; abundant. A hand- 

 some species, about 6 inches high, with large, bright 

 yellow flowers, spotted with scarlet. Fl. June Sep- 

 tember. Perennial. 



* S. Hirculm (Yellow Marsh Saxifrage) differs from 

 the last in having its flowers solitary, or nearly so ; it is 

 of very rare occurrence : S. oppositifolia (Purple Moun- 

 tain Saxifrage) has egg-shaped leaves, and large, soli- 

 tary, purple flowers; it grows on the mountains of 

 Wales, Yorkshire, and Scotland. 



* Calyx spreading ; leaves divided. 



5. S. granuldta (White Meadow Saxifrage). Root- 

 leaves kidney-shaped, with rounded lobes, stalked ; 

 stem-leaves nearly sessile, sharply lobed ; flowers pa- 

 nicled ; roots granulated. Gravelly meadows ; not un- 

 common. A pretty plant, with slender leafy stems, 

 10 12 inches high, and rather large, pure white 

 flowers. The roots are remarkable for producing nu- 

 merous, downy, bulb-like tubers. A double variety is 

 frequent in gardens. Fl. May, June. Perennial. 



6. S. tridactylites (Rue-leaved Saxifrage). Whole 

 plant viscid with glandular hairs ; leaves wedge-shaped, 

 3 5-cleft ; stem much branched ; flowers terminal, each 

 on a separate stalk. On the tops of walls, and roofs of 

 cottages ; common. A small species, rarely more than 

 3 inches high, with very hairy and viscid stems, and 

 small white flowers. The whole plant has usually a red 

 tinge. Fl. May, June. Annual. 



7. S. hypnoides (Mossy Saxifrage). Root-leaves 3 5- 

 clelt ;, those on the creeping shoots 3-cleft, or entire ; 

 lobes of the leaves all very narrow, acute, bristle-pointed, 

 and fringed. Mountainous places ; common. Distin- 

 guished by its dense tufts of finely divided leaves, and 



R2 



