Donations to the University of Idaho, Erickson Weed Diagnostic Laboratory, Moscow, ID 83844-2339 are greatly appreciated. Identification of your plant is not simple. We'll do our best if you do your part by giving us whole plants that arrive in good condition with full information on this form. Without these, identification may be impossible for us. Send plants that have as many of these plant parts as you can.
Several plants are better than one plant.
Place the plant specimen in a plastic bag between dry paper towels without pressing or adding moisture and close the bag. If the plant is from an aquatic site add one tablespoon mouthwash to the sample. Mail it on Monday, or Tuesday. If fresh material is in the mail over the weekend, it may decay beyond recognition. Store it in a refrigerator until mailing.