SAXIFRAGE TRIBE 109 



flowers, which are often so crowded as to completely hide the stems 

 and foliage. It grows on the mountains of Scotland, Wales, and 

 Northern England. — Fl. April, May. Perennial. 



2. S. aizoides (Yellow Mountain Saxifrage). — Leaves very narrow, 

 fleshy, fringed ; flowers in a leafy panicle. A handsome species 

 about 6 inches high, with large bright yellow flowers spotted with 

 scarlet. Damp situations by mountain streams, etc., in the north 

 of England, Scotland, and in Ireland. — Fl. June to September. 

 Perennial. 



3. S. Hircidits (Yellow Marsh Saxifrage). — A rare mountain 

 species, with narrow, undivided, alternate leaves and rather large 

 yellow flowers, borne singly on 6-inch stems. Wet situations in the 

 north. — Fl. August. Perennial. 



4. 5. hypnoides (Cut-leaved or Mossy Saxifrage). — Root-leaves 3 

 to 5-cleft ; those on the creeping shoots 3^cleft or entire ; lohes of 

 the leaves all very narrow, acute, bristle-pointed, and fringed. Dis- 

 tinguished by its dense tufts of finely divided leaves and loose 

 panicles of 1-8 rather large white flowers. Mountainous places, 

 especially in the north ; very frequent in gardens. — Fl. May to July. 

 Perennial. 



5. 5. ccEspitosa (Tufted Alpine Saxifrage,). — Closely allied to tlie 

 preceding, but distinguished by broader leaves, which are more 

 obtuse and more cut ; the calyces also are blunter. The flowers are 

 smaller, and are borne singly or in twos on rather downy stems 2 or 

 3 inches high. High mountains in the north ; very rare. — Fl. May 

 to August. Perennial. 



6. S. granidata (Meadow Saxifrage). — Root-leaves kidney-shaped 

 with rounded lobes ; stem-leaves nearly sessile, sharply lobed ; 

 flowers panicled ; roots granulated. A pretty plant, with slender, 

 leafy stems, 6-12 inches high, and rather large, pure white flowers. 

 The roots are remarkable for producing numerous downy, bulb-like 

 tubers. A double variety is common in gardens. Gravelly mea- 

 dows ; not uncommon. — Fl. May, June. Perennial. 



7. S. cerniia (Droop)ing Saxifrage). — Somewhat like the last ; 

 stems erect, slender, imbranched ; leaves kidney-shaped, lobed, the 

 upper ones with bulbs in the axils ; fl.owers 1-3, somewhat drooping, 

 and in Britain often absent. Found only at the summit of Ben 

 Lawers. — Fl. June to August. Perennial. 



8. S. rivularis (Alpine Brook Saxifrage). — A small glabrous 

 species, with stalked, deeply divided root-leaves; and very small 

 white flowers, borne 2 or 3 together on weak, almost leafless stems. 

 Very rare ; only found on the summits of one or two Highland 

 mountains. — Fl. July, August. Perennial. 



9. S. tridadylites (Rue-leaved Saxifrage). — Whole plant viscid, 



