Tanacetum 



Compositae 



991 



5 "30 



Map 2172 

 Chrysanthemum Leucanthemum 

 var pinnatifidum Lecoq & Lamolle 



~ ^30 

 Map 2173 

 Chrysanthemum Balsamita 

 var. tanacetoides Boiss 



50 



Map 2174 



Tanacetum vulqare L 



1. Chrysanthemum Leucanthemum L. var. pinnatifidum Lecoq & 

 Lamotte. (For a discussion of species and variety see Rhodora 5: 177-181. 

 1903.) Oxeye Daisy. Map 2172. This plant is now found throughout the 

 state. I can remember when it was very rare or absent in northern In- 

 diana, but it has now become well established in all parts, especially on 

 washed slopes in pastures. It is a common weed in the southern part of 

 the state, especially in the worn-out fields and pastures of the limestone 

 area. Not common in the southwestern counties. Clapp, in 1852, writes: 

 "Rare in the vicinity of New Albany." J. M. Coulter, in 1875, writes : "Is 

 becoming more abundant (in Jefferson County) every year and almost 

 takes possession of certain old pastures." On account of its showy flowers 

 it has been much cultivated and I believe its spread can be, for the greater 

 part, attributed to this cause. I have never seen the typical form of 

 the species. 



Nat. of Eu. ; Newf. and Que., southw. to N. J., and doubtless more 

 widely distributed. 



2. Chrysanthemum Balsamita L. var. tanacetoides Boiss. Cost- 

 mary. Map 2173. This species possesses medicinal qualities and for this 

 reason was formerly much cultivated in gardens, from which it has oc- 

 casionally escaped. There are five reports for the state. When once estab- 

 lished, it is able to maintain itself. 



Nat. of the Old World: N. S. to Mich., southw. to N. Y. and Ind. 



9341A. TANACETUM [Tourn.] L. Tansy 



Ultimate divisions of the leaves sparingly incised-serrate 1. T. vidgare. 



Ultimate divisions of the leaves finely and closely denticulate, many of the teeth in- 

 curved la. T. vidgare f . crispum. 



1. Tanacetum vulgAre L. Common Tansy. Map 2174. This is a 

 medicinal plant which has been cultivated in gardens since pioneer times. 

 It has escaped in all parts of the state. Apparently it propagates entirely 



