104 BOTANY OF MICHIGAN 



Michx. of some authors). Wild red raspberry. Dry open or partially 

 shaded ground. Abundant. 



Rubus parviflorus Nutt. Salmon-berry. Usually in open woods. 

 Often plentiful. 



Rubus triflorus Richards. Dwarf raspberry. Damp open or shaded 

 ground . Common . 



Rubus allegheniensis Porter. Tall blackberry. Open places and 

 burned over ground. Common. 



Rubus canadensis L. Millspaugh's blackberry. Mostly borders of 

 hardwoods and along streams. Plentiful. This is not the dewberry 

 formerly having this scientific name, but an upright shrub. 



Rubus nigricans Rydb. Bristly blackberry. In marshy and swampy 

 ground. Often very abundant. A creeping or ascending shrub, re- 

 sembling the dewberry, but with small insignificant fruit. 



Rubus hispidus L. Running swamp blackberry. Tamarack-black 

 spruce swamps. Often abundant. 



Rubus villosus Ait. (R. procumbens Muhl.). Dewberry. Dry open 

 ground. Often plentiful. Fruit large and palatable. Formerly having 

 the scientific name of Rubus canadensis L. 



Agrimonia gryposepala Wallr. Tall hairy agrimony. In hardwoods 

 and thickets. Frequent. 



Agrimonia striata Michx. Brit ton's agrimony. Damp open woods 

 and along streams. Apparently infrequent. Noticed in particular near 

 the upper falls of the Tahquamenon River in Luce County. 



Rosa acicularis Lindl. Prickly rose. Dr}dsh open or partially shaded 

 ground. Frequent. 



Rosa blanda Ait. Meadow rose. Dryish open ground. Often abun- 

 dant on sandy beaches and sand dunes acting as an efficient sand binder. 

 Sometimes afflicted by the gall-fly, Rhodistes bicolor. 



Rosa rubiginosa L. Sweetbrier. Occasional on roadsides as an escape. 



Prunus serotina Ehrh. (Padus virginiana (L.) Mill.). Wild black 

 cherry. Occasional throughout. Apparently more frequent near 

 Munising in Alger County. 



Prunus virginiana L. (Padus nana (DuRoi) Roemer.) . Choke cherry. 

 In dry or damp ground. Common throughout. 



Prunus pennsylvanica L.f. Wild red cherry. Open woods and clear- 

 ings. Very abundant on burned over ground. 



Prunus cuneata Raf . Appalachian cherry. Dryish sandy open ground. 

 Often plentiful. 



Prunus pumila L. Sand cherry. Plentiful on the sandy beaches of 

 Lake Michigan and Lake Superior. Also often covering sand dunes. 

 An efficient sand binder. 



Prunus nigra Ait. Canada plum. Borders of woods and banks of 



