FLORA OF VERMONT 51 



P. argentea, L. Silverweed. Dry barren fields ; common. 



P. arguta, Pursh. Rocky hills ; occasional. 



P. fruticosa, L. Shrubby Cinquefoil. Swamps and moist cliffs. Smuggler's 

 Notch; Lake "Willoughby. Troublesome as a pasture weed in south- 

 western Vermont. 



P. Monspeliensis, L. (P. Norvegica, L. ) Dry soil ; frequent. 



P. palustris, Scop. ( Comarum palustre, L. ) Marsh Cinquefoil. Cool bogs ; 

 frequent. 



P. recta, L. Brattleboro, Bates; Rutland, Eggleston. 



P. simplex, Mich x. 1 (P. Canadensis of American authors in part. ) Dry 

 soil ; common. 



P. tridentata, Ait. Summits of cliffs and mountains ; occasional, e. g. Mt. 

 Mansfield, Camel's Hump, Snake Mountain, Pownal. 



POTERIUM. (SANGUISORBA.) Burnet 



P. Canadense, Benth. and Hook. Brattleboro, Frost; abundant on the 

 banks of the "West River, Grout. 



P. Sanguisorba, L. Roadside, Charlotte Center, Pringle. 



PRUNUS. Pu'M. Cherry 



P. Americana, Marshall, var. nigra, Waugh. (P. nigra, Ait.) Canada Plum. 

 Woods and fencerows ; frequent. 



P. avium, L. Mazzard Cherry. Manchester, Miss Day. 



P. cuneata, Raf. Sand banks of lake shore, Burlington, Pringle. Frequent 

 on the sand plains, South Burlington, Howe. 



P. Pennsylvania, L. f. Wild Red Cherry. Roadside thickets; common. 



P. pumila, L. Sand Cherry. Rocky or sandy shores of the Connecticut 

 and Champlain valleys ; occasional. 



P. serotina, Elirh. Black Cherry. Woodlands ; common. 



P. Virginiana, L. Choke Cherry. Fencerows, woods and banks ; common. 



PYRUS 



P. Americana, DC. (Sorbus Americana, Marsh.) American Mountain Ash. 

 Swamps and mountain woods ; frequent. 



i Just as this is going to press a letter is received from M. L. Fernald, stating that 

 " Potentilla simplex, Michx. is the common sprawling species of New England, while 

 P. Canadensis is a low, hardly repent, cauesceut species which hardly reaches southern 

 Maine and New Hampshire." It was not possible to re-examine Vermont specimens other 

 than those in the herbarium of the University of Vermont. All of those proved to be 

 P. simplex as above defined, and the name P. Canadensis is therefore omitted from the 

 list. 



