S. L. Welsh Herbarium - Vascular Plants

Leigh Johnson - Curator of Vascular Plants

Robert Johnson - Collections Manager

Duane Atwood - Assistant Curator, retired

Stanley Welsh - Emeritus Curator of Vascular Plants

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Specimens: 600,000+
Type specimens: ~2,000
Major Groups:
  • Ferns & Fern Allies
  • Gymnosperms
  • Flowering Plants

Plant drawing  Plant drawing   Plant drawing

Geographic Representation is world wide, with strong emphasis on the Great Basin & Intermountation West. The Herbarium is recognized as a major regional center for the study of Western American plants and is equally important as resource for student research and learning. 

Current & Recent Research Projects
include threatened and endangered species, species delimitation, and phylogeography in western North America and Patagonia.

Data Access is through the links at the top of this page.  The herbarium is incompletely databased. Access to a limited set of specimen photos is possible through the University’s Lee Library, with label data available through the Intermountain Region Herbarium Network. Improving both resources in a vigorous area of current herbarium activity.  Inquiries for additional data can be made to the Collections Manager or Curator.

News & Northworthy


  • Robert Johnson joined the herbarium as Collections Manager in January.  Robert brings a great deal of experience with native plants of the Intermountain West to the herbarium and we are pleased to have him here.
  • Leigh Johnson gave a workshop on Polemoniaceae identification at the Jepson Herbarium (UC Berkeley) in June.
  • Herbarium staff and students conducted field work in California, Oregon, Utah, and Alaska.
  • Renovation of the herbarium is almost complete with new specimen storage and specimen examination facilities in place.
Man doing field work 


  • The herbarium received an NSF facilities grant In April to add a new wing of compact storage with over 200 herbarium cases, along with support to database the ferns, gymnosperms, and many of the monocots.
  • A cooperative agreement with the Grand Canyon Trust enabled staff to database plants from the Vermillion Cliffs Natl. Monument and participate in associated fieldwork.

Contact Info - To arrange a visit to the herbarium, request specimen information, or request specimen loans, please contact the collections manager, Robert Johnson.