398 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



HELENIUM L. Sneezeweed. 

 Helenium nudiflorum Nutt. (naked-flowered). 



Rare. Fields: Groton (Mrs. C. B. Graves), Elast Lyme 

 (F. H. Dart), Bridgeport (Fames). June — Oct. Intro- 

 duced from the South. 



Helenium autumnale L. (autumnal). 



Sneezeweed. Staggerwort. 



Occasional or frequent. Swamps and on river banks. 

 Aug. — Oct. 



The herb is used as a substitute for Arnica and in powder 

 as a snuff for catarrh. The flowers are poisonous and cattle 

 and horses are sometimes killed by eating freely of them. 



Helenium tenuifolium Nutt. (fine-leaved). 



Rare. Bridgeport, in railroad wastes (Fames). Aug. — 

 Sept. Adventive from the South. 



ACHILLEA L. Yarrow. 

 Achillea Millefolium L. (thousand-leaved). 

 Common Yarrow. Milfoil. 



Common. Fields and waste ground. June — Nov. 

 A form with pink or reddish flowers is grown for orna- 

 ment and sometimes escapes from gardens to roadsides. The 

 plant is medicinal. 



Achillea lanulosa Nutt. (woolly). 

 Yarrow. 



Rare. Fields and waste ground : Southington (Andrews), 

 and probably elsewhere, as it has not been distinguished from 

 Achillea Millefolium. July — Aug. Introduced from the 

 West. 



ANTHEMIS L. Chamomile. 

 Anthemis Cotula L. (like Cotula, the Buck's-horn). 

 May-weed. Dog Fennel. Fetid Chamomile. 



Common. Roadsides and waste places. June — Nov. 

 Naturalized from Europe. 

 The plant is medicinal. 



Anthemis arvensis L. (of cultivated ground). 

 Corn Chamomile. 



