The Fowler Herbarium collection, now housed in the Jessie V. Deslauriers Centre for Biology, includes over 140,000 plant specimens with some dating back to the mid-1800s. The Kingston region is particularly well-represented, but the herbarium also contains excellent collections of bryophytes (mosses and lichens) and vascular plants from the Canadian Arctic and Russia. The purpose of the Fowler Herbarium is to catalogue the biodiversity of plants in the Kingston region and make this information available to interested individuals and institutions. The herbarium maintains an electronic database and has published the Plants of the Kingston Region (1996), which is available for a small fee. Visits to the herbarium can be arranged by contacting the Associate Curator. The herbarium also sponsors workshops on plant ecology and identification, which are open to the general public.