CLASS XII. ORDER V. 217 



beneath. Flowers yellow, solitary, on long, axillary peduncles. — 

 June. — Perennial. — With us this is always a niarititr\e plant. 



POTENTILLA ARCiENTEA. L. Hoory CuiquefoU. 



Leaves quinate, Avedge form, cut, downy under- 

 neath, stem nearly erect. 



A small, humble species, frequent on Boston common and 

 elsewhere in dry soils. Stems spreading, half erect, white and 

 downy. Leaves alternate, consisting of five wedge form or 

 spatulate leafets, cut into a few lobes or large teeth at the end, 

 white and downy underneath. Flowers numerous, on the ends 

 of the branches, small, yellow. — From June to September. — 

 Perennial. 



PoTENTiLLA SIMPLEX. MicTi. CommoTi CinqupfoU or 



Fivcfiiiger. 

 Erect, simple, hairy; leaves five digitate, oblong, 

 oval ; peduncles lateral, solitary, elongated, one flow- 

 ered. Mich. 



Root abrupt. Stem erect at base, reclining at top, rough, hairy. 

 Leafets in fives, oval, deeply serrate, the nerves hairy underneath. 

 Stipules cut into lanceolate lobes. The primary leaves are nearly 

 sessile having in the axil of each a petioled leaf or two, a long 

 filiform peduncle, and sometimes also the rudiment of a branch. 

 Flowers yellow. Petals roundish, inversely heart-shaped, longer 

 than the calyx. — Pastures and woods. — May, June. — Perennial. 

 PoTENTiLLA sARMENTosA. Mukl. Running Cinqucfoil. 



Stem sarmentose; leaves quinate, leafets obovate, 

 obtuse, serrate, glabrous above, hairy beneath, petals 

 roundish, longer than the calyx. 

 Syn. PoTEXTiLLA Canadensis. Hooker? 



A very delicate species extremely common in dry pastures, 

 spangling the grass with its yellow flowers from April till the 

 middle of May. Root somewhat abrupt. Stems procumbent, 

 very short, at the time of the first flowering, but extending a foot 

 or more along the ground during the summer. Leaves quinate 

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