608 



Leguminosae 



Desmodium 



o ~3o 

 Map 1245 



Desmodium canadense (L.) DC. 



6 50 



Map 1246 



Desmodium paniculatum (L.) DC. 



8a. Desmodium bracteosum var. longifolium (T. & G.) Rob. Map 1244. 

 This variety is found in the habitat of the species. 

 Ohio to N. Dak., southw. to Ala. and Tex. 



9. Desmodium canadense (L.) DC. (Meibomia canadensis (L.) Ktze.) 

 Canada Tickclover. Map 1245. Rather frequent in prairie habitats 

 throughout the state, becoming infrequent or rare in the hilly part of the 

 unglaciated area. 



N. B. to Man., southw. to N. C. and Okla. 



10. Desmodium paniculatum (L.) DC. (Desmodium paniculatum var. 

 angustifolium T. & G.) Panicled Tickclover. Map 1246. This is one 

 of our most common tickclovers and is frequent throughout the state in 

 dry soil in woodland and clearings. It is most commonly associated with 

 oaks in the openings on ridges, on rocky slopes, borders of woodland, and 

 rarely in fallow fields. This species is extremely variable in the width of 

 its leaflets and in the density of its pubescence. Plants will vary from 

 almost glabrous to densely pubescent with both short, hooked hairs and 

 longer ones which are not hooked. Since the forms show no geographic 

 range in the state they are combined on one map. 



10a. Desmodium paniculatum var. pubens T. & G. This is the most 

 vigorous and pubescent form of the species. The range and habitat are 

 those of the species. 



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



11. Deimodium laevigatum (Nutt.) DC. (Meibomia laevigata (Nutt.) 

 Ktze.) Smooth Tickclover. Map 1247. This species is very local in its 

 distribution and is probably restricted to the ridges of the unglaciated area. 

 Potzger reported it from Monroe County. 



Southern X. Y. to Mo., southw. to Fla. and Tex. 



12. Desmodium Dillenii Darl. DlLLENlUS TICKCLOVER. Map 1248. This 

 tickclover is frequent throughout the state, preferring dry soil. It is 



