We’re revising Flora of the Pacific Northwest, published in 1973, with updated information for over 5,300 varieties of vascular plants.
Developing “barcodes” with fungi DNA helps easily identify species.
The WTU Herbarium's total holdings number more than 650,000 specimens of vascular and nonvascular plants, fungi, lichens and marine algae.
A map of Washington state showing all vascular plant specimen localities in the Herbarium WTU collections database.
Explore the complete checklist of the vascular plants of Washington state.
A tool for mapping the distributions of vascular plant species in the San Juan Islands.
An interactive mapping tool that displays ranges of weeds and invasive plants in Washington state.