COMPOSITAE — CORN CHAMOMILE 789 



Distribution. In fields and waste places in the Eastern States. Nova Scotia 

 to Virginia, Missouri, and Wisconsin to the Pacific coast. 



Poisonous properties. The oil of Anthemis nobilis contains the terpene 

 onthemin C^gHg^, angelic acid C^HgO^, tigliiiic acid C^H^Oj The oil produces 

 abdominal pain, increase of heart action and freeness of the bowels. It is not 

 known that our species is poisonous but stock carefully avoid the plant. 



21. Chrysanthemum (Tourn.) L. Ox-eye Daisy 

 Perennial or annual herbs; leaves alternate, dentate, pinnatifid or dissected;: 

 heads single or corymbose, or both ray and tubular flowers rarely wanting; in- 

 volucre with broad imbricated scales ; receptacle flat or convex ; ray flowers 

 pistillate and fertile, the rays white; style, branches of the pistillate flowers, 

 truncate and penicillate; achenes angled ar terete, striate with pappus. 



About 100 species of wide distribution. The common fever-few (^Chry- 

 santhemum Parthenium) is frequently cultivated in Germany and is rarely an 

 escape in eastern North America, It contains the oil of feverfew. 



Insect powders are derived from several . species of Chrysanthemum, the 

 Dalmatian from C. cinerariifolium cultivated in Europe, North Africa, New 

 York and California; the C. coccineum Willd. and C. Marshallii, found in the- 

 region of the Caucasus, furnish the Persian insect powders. 



Chrysanthemum Leucanthemum L. Ox-eye Daisy 

 A perennial herb with erect stem and spatulate, petioled root leaves, those 

 of the stem partly clasping; all the leaves cut or pinnatifid toothed; the nearly 

 simple stem bears a large many-flowered head with numerous white rays, scales 

 of the involucre with scarious margins; disk and ray flowers pistillate and 

 fertile; achenes marked with longitudinal lines, pappus absent. 



Distribution. Common in fields and meadows of the eastern states and 

 eastern Canada, less common in the middle and western states. 



Poisonous properties. This abundant weed probably contains an active 

 principle. The C. coccineum contains the alkaloid chrysanthemin Cj^H^gN^Oj.- 

 The flowers are more or less irritating. 



22. Tanacetum L. Tansy 

 Bitter acrid strong-scented aromatic annual or perennial herbs ; leaves al- 

 ternate, 1-3 pinnately dissected and corymbed heads; involucre hemispherical, 

 depressed, scales imbricated into several series; rays wanting or present, yellow 

 marginal flowers pistillate and fertile; corollas S-toothed; style branches trun- 

 cate and penicillate; achenes angled or ribbed; pappus a short crown. A small 

 genus of 35 species, natives of the northern hemisphere. The Tanacetum 

 balsamita contains a balsamic oil. 



Tanacetum vulgare L. Tansy 



A bitter acrid strong scented simple or branched perennial herb from 2-4' 

 feet high; leaves pinnately divided into linear pinnatifid divisions, lobes serrate; 

 heads corymbose, many flowered ; ray flowers few, disk flowers yellow ; marginal 

 flowers fertile, scales of the involucre imbricated in several series; receptacle 

 flat or convex, naked; branches of the style brush-like at the summit; achenes 

 S-angled or S-ribbed, truncate or obtuse; pappus none or a short crown. 



Distribution. Native to Europe, frequently escaped from gardens to road- 

 sides along the Atlantic Coast as far west as Iowa and Kansas. 



Poisonous properties. The oil of tansy is obtained from this plant. The 



