o 



60 



ROSACEAE 



Rubus 



5. Rubus idaeus L. var. canadensis Richardson. (Rhodora 21: 97. 

 1919.) Map 1131. I have this form of the red raspberry from only four 

 counties where it was found in tamarack bogs and moist, mucky soil. 



Lab. to Alaska, southw. to Conn, and in the mts. to N. C, Ind., S. Dak., 

 and Colo. ; also in e. Asia. 



5a. Rubus idaeus var. strigosus (Michx.) Maxim. (Rhodora 21: 96. 

 1919.) (Rubus strigosus Michx.) Common Red Raspberry. Map 1132. 

 Found throughout the lake area, sometimes covering large peat areas that 

 have just passed out of the tamarack and marsh stages into the soft maple 

 and white elm stages. 



5. Newf. and Gaspe Co., Que., to s. B. C, southw. to Va., Ind., and Wyo. ; 

 also in e. Asia. 



6. Rubus hispidus L. Swamp Dewberry. Map 1133. Infrequent to 

 frequent throughout the lake area in acid soils, usually in tamarack bogs 

 or in moist, sandy soil in black oak woods, where it is usually associated 

 with wintergreen, lowbush blueberry and black chokeberry. South of the 

 lake area it is very local, being found principally in the hard, white, 

 minimacid, clay soil of the Illinoian drift, especially in Jefferson and 

 Jennings Counties. 



N. S. to Minn., southw. to Ga. and Kans. 



6a. Rubus hispidus f. plenifiorus Nieuwland. (Amer. Midland Nat. 

 4: 69. 1915.) Known only from the type locality in St. Joseph County. 



7. Rubus flagellaris Willd. (Rubus villosus Ait. and Rubus procumbens 

 Muhl.) Northern Dewberry. Map 1134. This species is found only in 

 slightly acid soil, usually in areas where the top soil has been removed by 

 erosion, hence mostly in fallow fields. It is more or less frequent in the 

 lake area and frequent to common in the southern part of the state. In the 

 lake area in the northern counties it is often found in moist, sandy, acid 

 areas in black oak woods. In all parts of the state the foliage is variable, 



