Elegant Cinquefoil

Potentilla concinna Richards, in Frankl. Journey 739 1823. — Bot. App. Frankl. Journey ed. 2. 20. 1823.
Potentilla humifusa Nutt. Gen. 1 : 310. 1818. Nqjt P. humifusa Willd. 1813.
Potentilla pule hella Spreng. Syst. 4 : Cur. Post. 199. 1827. Not P. pule he Ua R. Br, 1819.
Tormentilla humifusa G. Don, Gen, Hist. 2 : 562. 1832.
Poieniilla concinna humifusa jtehm. Stirp. Pug. 9: 49. 1851.
Potentilla concinna humistrata Rydb. Contr. U. S. Nat. Herb. 3 : 497. 1896.
Low and diffuse perennial, with a thick ro'ot and short woody caudex ; stems many, in the typical form usually spreading, more or less tomentose; stipules ovate-lanceolate, acuminate ; leaves densely white-tomentose beneath, silky and slightly tomentose above when young, digitate (sometimes approximately pinnate), of 5 leaflets; leaflets obovate or cuneate, more or less deeply toothed with ovate teeth, 1-3 cm. long ; hypanthium silkyvillous and tomentose, in fruit 6-8 mm, in diameter ; bractlets oblong, obtuse or mucronate, 3-4 mm. long ; sepals ovate, acute, 4-5 mm. long ; petals obcordate, a little exceeding the sepals, about 6 mm. long ; stamens about 20 ; pistils many ; styles short, filiform.
Type locality : Wooded region of British America.
Distribution : Dry hills and mountains from Colorado to Saskatchewan and Alberta.

Potentilla divisa Rydberg, sp. nov
Potentilla nivea dissecta S. Wats. Proc. Am. Acad. 8 : 559, at least in part. 1873. Not P. dissecta
Pursh, 1814. Potentilla concinna divisa Rydberg, Bull. Torrey Club 23: 431. 1896.
Perennial, with a thick root and short cespitose woody caudex ; stems spreading or
diffuse, 5-10 cm. long, more or less pubescent with long, white, usually appressed or
ascending hairs ; basal leaves 5-foliolate, digitate, or pinnate with approximate leaflets ;
petioles 1-3 cm. long, white-pubescent; leaflets 1-2 cm. long, obovate or oblanceolate in
outline, deeply cleft with oblong or lanceolate divisions, pubescent above with long white
hairs and sometimes slightly tomentulose, densely white-tomentose beneath ; stem-leaves
usually ternate ; stipules lanceolate, 5-10 mm. loag; hypanthium villous, in fruit 5-6 mm.
wide; bractlets lanceolate, acute or obtusish, 3-4 mm. long; petals broadly cuneate,
emarginate, about 5 mm. long ; sepals ovate, about 4 mm. long ; stamens about 20 ; pistils
many ; styles filiform, short.
Type locality : Rocky Mountains of British America.
Distribution : Dry hills from the Black Hills of South Dakota to Saskatchewan, Alberta, and