Botany And Herbarium
The resources on this page are designed for research reference and use.
More than 2.4 million plant, fungal, lichen, and algal specimen records from the Pacific Northwest.
Images and information about bloom time, habitat, and distribution range for more than 2,700 plant species that grow wild in Washington.
Images, species descriptions, range maps and bloom period for more than 850 common wildflowers, shrubs and vines that occur in Washington.
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.
Past and ongoing partnerships include Washington Flora Checklist, Plants of Washington Image Gallery, Flora of the Pacific Northwest revision project, Botany Washington, and botanical workshops. Visit their website.