Saxifraga.] SAXIFRAGES. 141 



Section 5. Nephrophyl'lum, Gaud. Annual or perennial. Leaves 

 chiefly radical, broad, palmately lobed. Sepals suberect, more or less 

 connate and adnate to the ovary. Petals white. — Hairs articulate. 



8. S. tridactyli'tes, L. ; annual, stem erect many-flowered glandular- 

 hairy, leaves cuneate 3— 5-fid, uppermost entire, petiole broad, calyx-lobes 

 short erect obtuse. 



Wall-tops and dry places, E. Scotland, from Caithness to Cornwall and Kent ; 

 ascends to 1,800 ft. in Yorkshire; Ireland; Channel Islands; fl. April- 

 June.— Stem 2-6 in., simple or branched above. Radical leaves §-1 in., 

 rosulate ; segments linear-oblong, outer cleft. Cyme subracemose ; bracts 

 subopposite, pedicels slender. Flowers § in. diam., erect, white. Calyx- 

 tube oblong. Petals small. Capsule inferior; beaks short divergent. — 

 Distrib. Europe, N. Africa, N. and W. Asia. 



9. S. rivular'is, L. ; perennial, stems decumbent rooting 1-3-flowered, 

 leaves reniform palmately 5-lobed, petiole slender, calyx-lobes acute. 

 Alpine wet rocks and streams, alt. 3,000-3,600 ft., Ben Lawers, Braemar, Ben 



Nevis; fl. July- Aug.— Tufted, slender, succulent, 1-4 in., slightly glandular- 

 hairy. Leaves |-1 in. diam., lobes entire ; petiole as long as the stems. 

 Flowers 1-2, J in. diam., erect, white ; bracts leafy, opposite, usually un- 

 divided. Calyx-tube § as long as the lobes, hemispherical. Petals distant, 

 small, obovate-oblong. Capside with short divergent beaks. — Distrib. 

 Scandinavia, Arctic Europe, Asia, and America. 



10. S. granula'ta, L. ; glandular-pubescent, stem erect bulbiferous at 

 the base branched and many-flowered above, leaves petioled reniform pal- 

 mately lobulate, cauline sessile, calyx-lobes erect obtuse. 



Sandy banks and meadows, from Elgin to Somerset and Kent ; ascends to 

 1,500 ft. in Yorkshire ; rare in Ireland ; fl. April-May. — Gregarious. Bulbs 

 as large as a pea, brown. Stem 6-18 in. Radical leaves \-\\ in. diam., 

 petiole slender; cauline deeper and more acutely cut. Flowers 1 in. diam., 

 campanulate, inclined or drooping, white. Petals large, obovate. Calyx- 

 lobes as long as the tube. Stigmas large, reniform. Capsule with slender 

 beaks. — Distrib. Europe, N\ Africa, W. Asia, Himalaya. 



11. S. cer'nua, L. ; perennial, stem erect simple 1-3-fld., leaves 

 petioled reniform palmately deeply crenate or lobulate, cauline sessile with 

 axillary scarlet buds, calyx-lobes erect obtuse. 



Schistose rocks, Ben Lawers, alt. 4,000 ft. ; fl. July.— Sparingly glandular- 

 hairy, 2-6 in., leafy. Rootstock with scaly buds at its top. Radical leaves 

 |-| in. diam., often tinged red ; cauline more deeply lobed. Flowers ^-§ 

 in. diam., campanulate, drooping, white, rarely produced in Britain. 

 Calyx-tube very short. Petals large, obovate. — Distrib. Arctic and Alpine 

 Europe, N. Asia, America, Himalaya. — Probably a form of S. granula'ta. 



Section 6. Dactyloi'des, Tausch. Perennial, tufted, with many 

 flowerless leafy shoots (except S. ccespito'sa). Leaves alternate, palmately- 

 partite or -lobed. Sepals connate at the base and adnate to the ovary, 

 suberect. Flowers white. — Hair articulate, glandular. 



