6 THE FLORA OF THE ALPS 



narrow, undivided leaves. The following are alpine or 

 sub-alpine : — 



B. Flowers 3'ellow ; petals 5 ; leaves narrow, undivided : 

 — R. gra7mneuSy L. ; flowers i-y, all the leaves linear- 

 lanceolate ; Southern Switzerland, Pyrenees, rare. R. 

 ophioglossifolms, 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. Schottii, 

 Dalla Torre, Styria, scarcely differs. 



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. pygmcsus, Whlb. ; stem with one leaf and one very 

 small flower (J in. diam.) ; high ; Tirol, Salzburg, Car- 

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

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

 fruit-stalk furrowed, beak of fruit strongly recurved ; 

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

 flower smaller, beak shorter; woods, rare; Chur. R, 



Villarsiif DC. {aduncus, G. and G.); stem 6-18 in., 

 beak of fruit hooked ; Southern Switzerland, Carinthia, 

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

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

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

 sharply toothed segments ; Switzerland. R. minutus, 

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

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



