120 Key to the System of 



589. Segments of leaves linear. 



Semiaquatic, alpine plant, quite dwarf ; petals five to ten ; 

 styles recurved. R. Millani. 



Segments of leaves broadish. 



Terrestrial, alpine plant, rather tall; petals generally 

 numerous and large; styles recurved. Figure 1. 



R. anemoneus. 



590. Leaves quite or nearly lobeless. 



Alpine plant, rather dwarf, beset with appressed hairlets ; 

 leaves nearly elliptic-cuneate ; stem one -flowered ; styles 

 almost straight. R. Muelleri. 



Leaves lobed or dissected ... ... ... ... 591 



591. Styles nearly or quite straight ... ... 592 



Styles recurved ... ... ... ... ... 593 



592. Tufted. 



Alpine, rather robust plant; leaves somewhat succulent, 

 dissected into numerous narrow lobes ; sepals elongated, 

 elliptical ; petals five to ten, often purplish outside. 



R. Guniiianus. 



Creeping or somewhat floating. 



Generally glabrous, seldom robust plant ; main segments of 

 leaves unitedly emanating from the stalk ; petals five to 

 twelve. R. rivnlaris. 



593. Sepals appressed. 



From dwarf to tall, much beset with hairlets ; main segments 

 of leaves somewhat pinnately arranged, incised or in- 

 dented ; petals usually five, comparatively large ; fruit- 

 lets smooth. R. lappaceus. 



Sepals reflexed 594 



594. Fruitlets smooth. 



Rather tall plant, beset with soft hairlets ; main segments 

 of leaves unitedly emanating from the stalk, incised or 

 indented ; petals usually five. R. hirtus. 



