A riker mount containing Cedar-hawthorn rust (Crataegus sp.) on Crataegus L. (hawthorn). Specimen collected on grid location D-57 Area (Off service road by Pinus mugo) at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here
and an Arboretum staff member will contact you.