Services Offered

Plant identifications

Fee: Cost is dependent on the quantity, quality and type of specimens submitted. Contact either Dr. Cholewa or Weiblen below for an estimate. Identifications are usually returned within one week depending on the number and quality of the specimens.

Plant specimens need to be dried and flattened; if roots are present, clean off any soil.
Place specimen between newspaper and box-board (such as cereal box paper).
If possible, include additional information such as county where found, habitat, flower color.

Include a postcard with your return address and mail to:
University of Minnesota Herbarium
Bell Museum of Natural History
1445 Gortner Ave
St Paul MN 55108


The Herbarium staff is available to share expertise in field collecting, specimen preservation, and taxonomy through hands-on workshops. Half-day and full-day programs can be tailored to your needs. Topics range from species identification and specimen curation to best practices for museums. Scheduling requires several months advance notice and fees are negotiable according to the number of participants. Please contact a curator for more information.

Forensic consultations

We are experienced in providing identification of plant material retrieved from crime scenes, as well as biochemical assays and DNA analyses, and are experienced in court room testimony. Dr. Cholewa is an associate member of the MDIAI. Rates upon request.

Identification of crime scene materials
contact Dr. Anita F. Cholewa, (612) 625-0215,

Biochemical assays/DNA analyses
contact Dr. George Weiblen, (612) 624-3461,