ROSACEA. 57 



P. argentea. L. Silvery Cinquefoil. A handsome, erect, 

 white-tomentose, silvery-looking plant, near a foot high ; leaves 

 quinate-palmate, obovate, revolute on the margin ; flowers yellow ; 

 June, in fields. 



P. simplex. Mx. Running Cinquefoil. Is also P. sarmentosa, 

 Willd., and has a running stem and hairy, with quinate leaves, and 

 yellow flowers ; spread over fields, and much like P. Canadensis. 



P. anserina. L. Silver Weed. Creeps among the grass by 

 its hairy reddish stem, with pinnate leafets, of a fine silvery ap- 

 pearance beneath, and solitary yellow flowers on long peduncles ; 

 blossoms in June, and grows on salt marshes near Boston. 



P. fruticosa. L., and P. floribunda. Ph. Woody Cinque- 

 foil. Mere varieties of the same plant ; woody, branching, 

 often 4 feet high, sometimes much less ; yellow terminal flowers 

 of long continuance ; pinnate leaves ; blooms in June ; grows on 

 the margin of ponds in marshy situations, and on cold upland 

 tracts. A handsome shrub, and mentioned here with most of the 

 herbaceous species. 



P. confertijlora, Torrey, or Bootia sylvestris, Big. Stem 2 

 feet high, erect, stiff, round, furrowed, with upper leaves simple 

 or ternate, and radical leaves pinnate ; petals white, roundish, and 

 flowers partially corymbed ; blossoms in June ; whole plant 

 covered with hairy down ; found at Deerfield, and in Berkshire 

 County. 



P. palustris. Scop. Marsh Cinquefoil. Known commonly 

 as Comarum palustre, L., has a stem 18 inches high, ascend- 

 ing, but not erect, with leaves divided into 3, 5, or 7 leafets, 

 oblong, serrate, and whitish beneath ; flowers in June. I found 

 it near a pond-hole in Stockbridge, half a mile north of the 

 church ; found also near Boston. 



Note. Cinquefoil ', of French origin, is five-leafed ; and, when 

 finger-like leafets appear, it is called five-finger. 

 8 



