Walter Hepworth Lewis

• Medical botany
• Medical Botany
• Airborne and allergenic pollen of North America
• Ecology field glossary
• A monograph of the genus Rosa in North America east of the Rocky Mountains
• Chromosome numbers of phanerogams
• Chromosomes and phylogeny of Erythrina (Fabaceae)
• Revision of Richardia (Rubiaceae)
• Species roses in the United States
• Wild American ginseng