The Virtual Plant and Pest Diagnostic Laboratory at Purdue University provides information on pests and problems associated with plants and also info on vertebrate and invertebrate pests.

Herbaria Home Herbaria Select an Area... Arthur Herbarium Kriebel Herbarium Contact Information Search Arthur Herbarium (PUR) Kriebel Herbarium (PUL) Uredinologists Worldwide Database Request for Information on Two Introduced Exotic Rust Fungi in North America The Joseph C. Arthur Herbarium (PUR): Largest collection of rust fungi (uredinales) in the world. ~100, 000 specimens. Established in 1888.