- Title: Contributions from the United States National Herbarium
- BPH Abbreviation: Contr. U.S. Natl. Herb.
- Published volumes: 1.1890/95–38.1963/74; 39.2000–
- Publisher: Smithsonian Institute, Washington, DC.
- Online access:
- Free: Botanicus (vols. 1.1890–53.2006), BHL (vols. 1.1890–57.2011), Smithsonian (39.2000–57.2011)
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