ISSN 0097-1618

• 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)