988 Compositae Anthem is 



3. Helenium nudifldrum Nutt. PURPLEHEAD SNEEZEWEED. Map 2165. 

 Apparently restricted to the southern part of the state, although Peattie 

 cites specimens found in Lake County near Miller. It is a weed and is 

 likely to appeal- almost anywhere. Most of my specimens were found in 

 moist, hard, white clay soil in pastures, where it often covered acres. It 

 seems to prefer a slightly acid soil. I have a specimen collected in Posey 

 County in 1878 by Schneck which, to my knowledge, is the oldest record 

 of it in the state. It is reputed to be very poisonous to stock. I add the 

 following note which I made August 19, 1933 : "Today I traveled over U. S. 

 Road 50 through Lawrence, Martin, and Knox Counties, and I found this 

 species to be a common weed in the western part of Lawrence County, in 

 Martin County, and in the eastern part of Knox County. I noted it in many 

 fields where it formed almost complete stands over 3-5 acres. I saw hogs 

 and cattle in some of the fields but apparently they did not eat it." 



Conn., Mich, to Mo., southw. to Fla. and Tex. 



9312. DYSSODIA ( av. 



1. Dyssodia papposa (Vent.) Hitchc. Fetid Marigold. Map 2166. 

 This species has been reported from all parts of the state. A few authors 

 remark about its relative abundance. J. M. Coulter (Bot. Gaz. 2: 146. 

 1877) in a report covering a trip through Floyd and Harrison Counties 

 says : "Hardly absent from the roadside for a 30-mile trip." Schneck, in 

 his report of the plants of the Lower Wabash Valley, says: "Along the 

 roadsides in considerable numbers. This appears to be a new-comer in our 

 locality." Blatchley, in his flora of Vigo County, published in 1897, says: 

 "Roadsides and railways : common." I do not recall that I have ever found 

 more than a few plants at a place, and I have found it only once during 

 the past 20 years, although I have been most active in collecting. I am of 

 the opinion that the plant is disappearing from our area, probably on 

 account of the present method of taking care of our highways. Most of my 

 plants are from highways, two are from pastures, and one is from a 

 wooded bank. It is evidently adventive in the state, and its future behavior 

 with us is a subject well worth recording. It is worthy of note that the 

 achenes of all of my specimens are densely upwardly appressed-pubescent 

 except those of my Perry County specimen, which are glabrous. 



111. to Minn, and Mont., southw. to La. and Ariz. 



9330. ANTHEMIS [Micheli] L. 



Chaff awl-shaped; achenes glandular- tuberculate; fresh plants with a fetid odor 



I. A. Cotula. 



Chaff not awl-shaped or lacking; achenes not glandular- tuberculate; fresh plants not 

 fetid. 

 Achenes ribbed all around, usually with 10 ribs; achenes 1.5-2 mm long; chaff linear- 

 lanceolate, abruptly cuspidate, slightly shorter than the tubular flowers 



2. A . arvensis. 



Achenes ribbed on the inner surface only, the ribs 3, indistinct; achenes 1-1.5 mm 



long; chaff, if present, oblong, obtuse, sometimes lacerate at the summit 



3. A. nobilis. 



