Hieracium 



Compositae 



1017 



50 



Map ^238 



Hieracium canadense Michx 



1. Hieracium aurantiacum L. Orange Hawkweed. Devils-paint- 

 brush. Map 2237. In 1934 I found this hawkweed in the sandy commons 

 on the south side of Simonton Lake in Elkhart County. In 1935 I found 

 it in a sandy, waste field and in an adjoining open woodland on the north 

 side of Weber Lake in Steuben County. It is an obnoxious weed in the 

 eastern states and, unfortunately, it is now cultivated as an ornamental 

 plant in Indiana. It will doubtless soon escape in many parts of the state 

 if it has not already done so. Usually called Devil's-paint-brush. 



Nat. of Eu. ; Newf. to Mich., southw. to N. J. and Pa.; also in Colo, and 

 on the Pacific coast. 



2. Hieracium canadense Michx. Canada HAWKWEED. Map 2238. In- 

 frequent in the lake area in very dry, sandy soil, on slopes wooded with 

 black and white oak and on open dunes and rarely in a prairie habitat. 

 Young's report from Jefferson County should no doubt be referred to some 

 other species. 



Lab. to B. C, southw. to N. J., Pa., Ind., S. Dak., and Oreg. 



3. Hieracium Gronovii L. Gronovius Hawkweed. Map 2239. Infre- 

 quent to frequent in the lake area, infrequent in the southern part of the 

 state, and local, rare or absent in many of the counties in the Tipton Till 

 Plain where the soil is too alkaline for it. It seems to prefer a slightly 

 acid soil and this fact accounts for its being found on washed wooded 

 slopes, interdunal flats, and the hard, white, sandy, clay loam of the 

 Illinoian drift. 



Fernald & Griscom (Rhodora 37: 185-186. 1935) report a variety of 

 this species, var. foliosum Michx., as being found in southern Indiana. 

 The variety is described as having more cauline leaves which extend nearly 

 to the inflorescence. We have a few plants answering this description, but 

 I do not regard them as worthy of a varietal name. The cauline leaves 

 on our plants vary from few to many, the variation apparently due, for 

 the most part, to nutrition. 1 have seen very vigorous and large plants 

 that exceeded the size of average plants, growing in moist, clay soil in 



