6 THE FLORA OF THE ALPS 



narrow, undivided leaves. The following are alpine or 

 sub-alpine : — 



B. Flowers yellow ; petals 5 ; leaves narrow, undivided : 

 — R. gramhieus^ L. ; flowers 1-7, all the leaves linear- 

 lanceolate ; Southern Switzerland, Pyrenees, rare. R, 

 ophzoglossifolius, Willd. ; flowers numerous, lower leaves 

 cordate, upper elliptical ; Pyrenees. 



C. Flowers yellow ; petals 5 ; leaves peltate or reni- 

 form : — R. Phthora^ Crntz. ; leaves reniform, radical 

 leaves on long stalks, root-fibres tuberous ; local. R, 

 Thora, L. ; leaves reniform, radical leaves o, root-fibres 

 tuberous ; Alps, Jura, Pyrenees, local. R. Schottiiy 

 Dalla Torre, Styria, scarcely diflers. 



D. Flowers yellow ; petals 5 ; all the leaves more or 

 less divided : — R. lanuginosus^ L. ; leaves palmately 3-5- 

 partite, the whole plant covered with yellowish hairs ; 

 mountain forests; Switzerland, Jura, Pyrenees, rare. 

 R. pygmcBus, Whlb. ; stem with one leat and one very 

 small flower {\ in. diam.) ; high ; Tirol, Salzburg, Car- 

 inthia, rare. R. nemorosus^ DC. {aureus^ Schleich.; sylva- 

 ticuSy Gren.); flowers large (J to i in.), golden yellow, 

 fruit-stalk furrowed, beak of fruit strongly recurved ; 

 woods. R. polyantheniosy L. ; resembling the last, but 

 fl.ower smaller, beak shorter; woods, rare; Chur. R. 

 Villarsiiy DC. {aduncuSy G. and G.); stem 6-18 in., 

 beak of fruit hooked ; Southern Switzerland, Carinthia, 

 Pyrenees. R, Gouanij Willd. ; stem 4-15 in., stem-leaves 

 amplexicaul, beak of fruit long, curved; Pyrenees. R, 

 BreymanuSy Crntz.; stem iJ-6 in., radical leaves with 

 sharply toothed segments ; Switzerland. R. minutuSy 

 Leyb. ; stem i -flowered, sepals narrow, as long as the 

 petals, leaves \ in. diam. ; Carinthia, rare. R. mon- 



