File:Interstate medical journal (1919) (14741119886).jpg

Identifier: interstatemedica2619unse (find matches)
Title: Interstate medical journal
Year: 1919 (1910s)
Authors:
Subjects: Medicine
Publisher: St. Louis, : Interstate Medical Journal
Contributing Library: The College of Physicians of Philadelphia Historical Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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eed in NewOrleans and its vicinity. Sagebrush (Artemisia triclentata, Fig. 9). This belongs to thewormwood family (Artemisia), which replaces the ragweed as themost common hayfever weeds in the Rocky Mountain and Pacificstates.8 While there are about 50 species found in these states. 7Classification of Hayfever Pollens from a Biological Standpoint. Wm. Scheppe-grell (Boston Med. and Surg. Jour., July 12, 1917). sHayfever—Its Cause and Prevention in the Rocky Mountain and Pacific States.Wm. Scheppegrell (U. S. Public Health Reports, July 27, 1917). Scheppegrell: Harmless Flowers and Hay fever Weeds 139 there are a few species, such as the California mugwort and thesagebrush, which grow in great abundance in the neighborhoodof towns and in agricultural districts, where they constitute aserious menace. Although they are typical hayfever weeds, some of the varietiesare used for decorative purposes, as, for instance, the Mexicanmugwort (Artemisia mexicana). After its use for this purpose
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Fig. 11.—Russian Thistle. Important cause of hayfever from New Jersey toOntario, the Northwest Territory, Kansas, and Washington. by a physician in the state of New York, he observed that largenumbers of seedlings of these plants, which had been thrown out,were growing on his grounds, and inquired from us as to theireffects in hayfever. We at once notified him that the Mexicanmugwort had a noxious pollen of far greater toxicity than theragweeds, and brought the matter to the attention of the New YorkState Board of Health. In the meanwhile we wrote to the dis- 140 INTERSTATE MEDICAL JOURNAL tributors of the Mexican mugwort at New York, who promptlyagreed to withdraw this plant from the market. Goosefoot (Chenopodiaceae, Fig. 10). This family of plants,socalled on account of the shape of its leaves, has over 500 species,with a wide geographic distribution. Their hayfever reaction ismuch less marked than that of the ragweeds or wormwoods. Someof the species, however, are important caus

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