SAXIFRAGA.] SAXIFRAGES. 129 



Alpine rocks, from Wales northwards ; ascending to near 4,000 ft. in the 

 Highlands; N.W. and N. Ireland; fl. April-May. Glabrous, dark green, 

 depressed. Stems 6-8 in., creeping. Leaves in., 4-fariously imbricate, 

 thickened and obtuse at the tip, ciliate with stout bristles. Flowers in. 

 diam. , sessile on short annual shoots, campanulate. Sepals obtuse, connate 

 to the middle. Petals obovate, bright purple. Capsule free, \ in. ; beaks 

 diverging, subulate. DISTRIB. Arctic and Alpine Europe, Asia and America, 

 W. Asia to the Himalaya. 



SECTION 2. Micran'thes, Haw. (gen.V Perennial, stemless, scapigerous. 

 Radical leaves petioled. Cymes dense-flowered. Sepals adnate to the base 

 of the carpels. Petals white. 



2. S. niva'lis, L. ; leaves broadly spathulate crenate-dentate. 



High alps, between 2,000 and 4,300 ft,, of Snowdon, Westmoreland, Argyle, 

 Perth, Aberdeen, and Ben Bulben in Sligo ; fl. July-Aug. Glandular- 

 hairy on the leaf -margins, scape, bracts and pedicels, 'elsewhere glabrous. 

 RootstocJc small. Leaves ^-1 in. diam., subcoriaceous, red beneath ; petiole 

 1-2 in. Scape 3-6 in., erect, simple. Floicers ^ in. diam., white, in capi- 

 tate 4-12-flowered cymes. Bracts linear. Calyx-lobes connate, purplish. 

 Capsule with short divergent beaks. DISTRIB. Alpine and Arctic Europe, 

 N. Asia, E. and W. N. America. 



SECTION 3. Hydat'ica and Arabide'a, Haw. (gen.). Perennial, scapige- 

 rous. Stem short or 0. Cymes lax-flowered. Sepals almost free, reflexed. 

 Petals white with 2 purple dots above the base. 



3. S. stella ris, L. ; stemless, leaves rosulate subsessile cuneate-lance- 

 olate coarsely toothed, scape leafless, filaments subulate. 



Alpine and subalpine rills, from Wales northwards, and in Ireland ; ascending 

 to 4,300 ft. ; fl. June-July. Glabrous or sparsely hairy. RootstocJc small, 

 branched. Leaves - 1 in., subsucculent, ciliate. Scape 3-8 in.; cyme 

 panicled. Flowers few, ^ in. diam. , white ; anthers and pistils red ; bracts 

 linear. Sepals lanceolate. Capsule with suberect slender beaks. DISTRIB. 

 Arctic and Alpine Europe, N. Asia, N. America. 



4. S. umbro'sa, L. ; more or less glandular-hairy, leaves petioled 

 orbicular or broadly ovate coarsely crenate or toothed, base rounded cuneate 

 or reniform, filaments dilated slightly upwards. 



Mts. in W. and S.W. of Ireland ; naturalized elsewhere ; fl. June July. 

 Leaves ^-2 in. diam. , rosulate, coriaceous ; petioles ^-l in. , J- terete or 

 flattened. Scape 6-12 in. , leafless. Ci/me panicled ; bracts linear. Flowers 

 J in. diam., white, sometimes sprinkled with red. Sepals reddish. Anthers 

 red. Capsule with short divergent beaks. DISTRIB. N. of Spain and 

 Portugal. 



Sub-sp. UMBRO'SA proper ; leaves obovate or suborbicular suddenly contracted 

 into a short broad petiole crenate or toothed. VAR. 1, umbro'sa proper ; 

 leaves compactly rosulate oblong- obovate crenate. W. and S. of Ireland ; 

 ascending to 3,400 ft.; naturalized in woods elsewhere. London Pride, 

 St. Patrick's Cabbage. VARv 2,puncta'ta, Haworth (sp.) ; leaves loosely rosu- 

 late orbicular crenate-serrate. VAR. 3, serratifo' lia, Mackay (sp.); leaves 

 ascending obovate sharply-toothed sometimes with intermediate teeth, 

 var. duplicato-serra'ta, Lond. Cat. 



K 



