482 REPORT OF NEW JERSEY STATE MUSEUM. 



Frequent in rocky places in the northern counties. Local in 

 our region and in part, at least, introduced. Stations close to 

 the Delaware River shores might well be established by plants 

 washed down fromi farther up stream, as it grows naturally at 

 Lambertville and Phillipsburg. 



Middle District.— Riyerion (KB). 



Pine Barrens. — Winslow Jnc. (introduced). 



POTENTILLA L.* 



Potentilla canadensis L. Cinquefoil. 



Potentilla canadensis Linnaeus, Sp. PI. 498. 1753 [Canada]. — Barton Fl. Phila. 



I. 236. 1818. — Knieskern 13. — Britton 96. 

 Potentilla canadensis var. simplex Britton 96. 



Commlon in dry fields and woods in the northern counties and 

 southward in the 'Middle district, and very rare on the coast 

 to Cape May. , 



The specimiens from Farmingdale and Yorktown are referable 

 to variety simplex, a form of little or no taxonomic value.* 



Fi — Early May tO' mid-June. 



Middle District. — Farmingdale, New Egypt, Bordentown, Burlington, Kin- 

 kora, Delair, Fish House, Medford (S), Lindenwold (S), Washington Park, 

 Swedesboro, Yorktown. 



Pine Barrens. — Waretown, Landisville (introduced). 



Coast Strip.— Barncgat City (L), Cold Spring (OHB). 



Potentilla pumila Poir. Dwarf Cinquefoil. 



Potentilla pumila Poir in Lamarck, Encycl. Meth. V. 594. 1804 [North 

 America]. 



Distribution the same as the preceding, but occurs more abun- 

 dantly on the coast strip. 



F/.— 4Late April to late May. 



Middle District. — Bordentown, Camden, Clementon, Quinton. 

 Coast Strip.-Suri City (L), N. Beach Haven (L), Harvey Cedars (L), 

 Palermo, Five-Mile Beach. 



GEUM L. 



Geum canadense Jacq. White Avens. 



Geum Canadense Jacquet, Hort. Vind. H. 82, pi. 175. 1772 [Canada]- 

 Geum album Britton 94. 



* P. argentea L.. Silvery Cinquefoil, must be regarded as a weed so far as 

 our region is concerned. 



