Oregon State University Herbarium

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About the Herbarium (directions)
The Oregon State University Herbarium houses approximately 550,000 vascular plant, bryophyte, algal, and fungal specimens. The collections are worldwide in scope, with a focus on the state of Oregon and the Pacific Northwest.
A comprehensive resource about the vascular plants of Oregon, providing information in ways that support the needs of diverse users.
The employees & volunteers associated with the herbarium and how to contact them.
Herbarium Databases
Online access to over 160,000 specimen records of Oregon vascular plant and over 85,000 mycological specimens. The Oregon Vascular Plant Atlas and our Type Specimen Images and Literature can also be accessed here.
Plant Identification Service
Taxonomic Treatments
Descriptions, images and identification keys for the Racomitrioideae mosses of Oregon, a database of the genus Thalictrum (meadow rue), and information about the Carex Working Group.
Oregon State University Mycological Collections Database
OSU Herbarium Strategic Plan
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