Desmodium 



Leguminosae 



607 



50 



Map 1242 



Desmodium illmoense Gray 



the peduncle, but further down on the stem. In addition to these there is 

 one single leaf at the base of the peduncle, and often one or sometimes 

 two single leaves beneath this. Lastly, there are often one or two single 

 leaves on the stem below the clustered part." He cited a specimen of mine 

 collected in Wells County. This form is now known as Desmodium acumi- 

 natum f. Chandonnetii (Lunell) Fassett. 



Maine to N. Dak., southw. to Fla., Ala., and Tex. 



6. Desmodium canescens (L.) DC. (Meibomia canescens (L.) Ktze.) 

 Hoary Tickclover. Map 1241. Frequent in dry, open habitats through- 

 out the state, although there are no reports from the counties along Lake 

 Michigan. This is our common, large tickclover. 



Mass., Ont. to S. Dak., southw. to Fla. and Tex. 



7. Desmodium illinoense Gray. (Meibomia illinoensis (Gray) Ktze.) 

 Illinois Tickclover. Map 1242. Restricted to the northern and west- 

 ern counties where it is infrequent. It grows on very dry, sandy or 

 gravelly soil and is found mostly in a prairie habitat along roadsides and 

 in open woodlands that have recently invaded prairie areas. This is 

 closely allied to Desmodium canadense and may be distinguished from it 

 by the large, persistent stipules, in contrast with the narrow, deciduous 

 ones of D. canadense, and by its inflorescence. D. illinoense usually has a 

 long, terminal raceme, which is much longer than the branches of the 

 panicle, while the inflorescence of D. canadense is more compact and 

 usually composed of many racemes of nearly equal length, although the 

 main axis is sometimes much longer. 



Ohio, Mich, to Nebr., southw. to Tex. 



8. Desmodium bracteosum (Michx.) DC. (Meibomia bracteosa 

 (Michx.) Ktze.) Large-bract Tickclover. Map 1243. Infrequent to fre- 

 quent possibly throughout the state. Like most species of the genus it 

 prefers the dry soil of white and black oak woods and is generally found 

 in open places and on slopes. 



N. E. to Wis., southw. to Fla. and Tex. 



