Lupinus 



Leguminosae 



593 



fields, usually far removed from a railroad. The one in Perry County 

 was found in dry soil in an old, fallow field about 2 miles east of Oriole 

 where it was associated with thick stands of Cassia fasciculata. Pepoon 

 and Umbach report finding two colonies along railroads in the dune area. 

 I think this species has been introduced into Indiana, probably in grass 

 seed or as a railroad waif. 



Mass. to S. Dak., southw. to Fla. and Mex. 



3672. LUPINUS [Tourn.] L. 



1. Lupinus perennis L. Sun-dial Lupine. Map 1211. Infrequent to 

 frequent in the counties indicated on the map, including Lake County, 

 but there are no reports outside this area. This species grows only in 

 dry and very sandy soil and is found on roadside knolls, in sandy, fallow 

 fields, and in open, black oak woods, especially on the dunes about 

 Lake Michigan where it formerly covered acres. The usual color of the 

 flowers is blue but they vary from blue to bluish purple, rose, and white. 

 In a large colony one can generally find white forms and usually individuals 

 that are rose color. I find a note on the label of one of my specimens as 

 follows: "Flowers pure white when collected. When taken out of the 

 press a few hours later the flowers were rose color. After drying in a 

 press to which heat had been applied the flowers were blue." The fact 

 that the pubescence varies in density and in length has led to the nam- 

 ing of the more pubescent form which most authors now ignore. The 

 several color forms also bear names which I am omitting. 



Maine, Ont. to Minn., southw. to Fla. and La. 



3688. MEDICAGO [Tourn.] L. 



Flowers blue purple; pods with 2 or 3 loose coils, 3-4 mm wide, mostly more than 

 1-seeded; leaflets linear-lanceolate to obovate, usually more than twice as long as 

 wide; plants perennial, mostly erect, decumbent, or ascending, 3-14 dm high. 



1. M. sativa. 



