Dear Amal, the Herbarium sheets are available to loan and/or exchange other materials. You need write to the Herbarium Curator requesting the samples that you want.

People do sell herbarium specimens and sometimes instutions will sell the entire herbarium.

Dear Wesley, what type of institutions do this kind of business?? Please.

During the field research I gather many of the herbarium. It has representatives of the family Lamiaceae.

Curator of the herbarium IBIW RAS.