TRANSCRIBER’S NOTE Italic text is denoted by _underscores_. Bold text is denoted by =equal signs=. Some minor changes to the text are noted at the end of the book. U. S. DEPARTMENT OF AGRICULTURE. FARMERS’ BULLETIN No. 188. WEEDS USED IN MEDICINE. BY ALICE HENKEL, _Assistant in Drug and Medicinal Plant Investigations, Botanical Investigations and Experiments, Bureau of Plant Industry_. [Illustration: USDA Seal] WASHINGTON: GOVERNMENT PRINTING OFFICE. 1904. LETTER OF TRANSMITTAL U. S. DEPARTMENT OF AGRICULTURE, BUREAU OF PLANT INDUSTRY, OFFICE OF THE CHIEF, _Washington, D. C., December 10, 1903_. SIR: I have the honor to transmit herewith a paper on Weeds Used in Medicine, and recommend that it be published as a Farmers’ Bulletin. This paper was prepared by Miss Alice Henkel, Assistant in Drug and Medicinal Plant Investigations, and was submitted by the Botanist with a view to publication. Respectfully, B. T. GALLOWAY, _Chief of Bureau_. Hon. JAMES WILSON, _Secretary of Agriculture_. CONTENTS. Page. Introduction 7 Collection and curing of drugs 7 Roots 8 Barks 9 Leaves and herbs 9 Flowers 10 Seeds 10 Disposal of the drugs 10 Descriptions of plants 10 Burdock 11 Dandelion 13 Docks 15 Yellow dock 15 Broad-leaved dock 16 Yellow-rooted water dock 18 Dock roots 18 Couch grass 19