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Weeds used in medicine

Chapter 33: CANADA FLEABANE. Leptilon canadense (L.) Britton. (Erigeron canadensis L.)
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About This Book

A practical handbook for farmers and collectors describing how common field weeds may be gathered, prepared, and cured for use as crude medicinal drugs. It explains proper seasons and techniques for digging roots and harvesting barks, leaves, flowers, and seeds; cleaning, drying, slicing, and storage methods; and precautions to prevent mold, contamination, and misidentification. The main portion offers concise botanical descriptions, uses, and preparation tips for many familiar species—such as burdock, dandelion, docks, couch grass, pokeweed, foxglove, mullein, lobelia, tansy, yarrow, jimson weed, poison hemlock, and mustards—supported by illustrations and practical advice on handling and marketing small lots.

CANADA FLEABANE.
Leptilon canadense (L.) Britton. (Erigeron canadensis L.)

Other common names.—Horseweed, colt’s tail, scabious, prideweed, butter weed, fireweed, blood-stanch, cow’s tail, bitter weed. (Fig. 25.)

Fig. 25.—Canada fleabane (Leptilon canadense (L.) Britton).

Range and habitat.—This weed is common in damp, sandy soils in fields and waste places and along roadsides in many parts of the United States, especially throughout the northern Mississippi Valley.

Description.—Canada fleabane is an annual weed belonging to the aster family (Asteraceæ). The stem, which is bristly-hairy, or sometimes smooth, varies greatly in height, according to the soil, being sometimes only 3 inches high, and in favorable soil often reaching a height of 10 feet. The larger plants are branched near the top. The leaves are usually somewhat hairy, those scattered along the stem being rather narrow, with unbroken margins, and the lower ones slightly toothed. From June to November numerous heads of small inconspicuous white flowers are produced, followed by an abundance of seed.

Parts used.—The entire herb is medicinal, and should be gathered during the flowering period and carefully dried. It has a faint, agreeable odor and a somewhat astringent and bitter taste. The fresh herb on distillation yields a volatile oil which is sold as oil of fleabane.

The common name “blood stanch” indicates the use of this plant for arresting hemorrhages from various sources and the bleeding of wounds. It is useful also in diarrhea and dropsy.

Price.—The price paid for erigeron or flea bane ranges from 6 to 8 cents per pound.