The U. S. National Arboretum Herbarium (NA) is finishing a long term project of reviewing the TYPE status of specimens held in the NA Nomenclatural Type Collection as well as Horticultural Cultivated Standards (formerly referred to as "CLONOTYPE"; see definitions below).
What is a TYPE Specimen and a Cultivated STANDARD?
Our Virtual Herbarium Project
It is our intention to electronically capture all of the data associated with each of the Type Specimens, Horticultural Cultivated Standards, as well as Specimens of Special Interest, to image these specimens, and to put all this information on the internet. The review process includes comparing label and annotation data on the herbarium sheets with the original publications. Although we have not finished the project we are close and have posted what we have done. You can review the specimens by following the links above or the drop-down menu links found on all of these Virtual US National Herbarium web pages.Some of these specimens have been determined not to be nomenclatural types - however, while not TYPES they may still be of special interest to the botanical community. These specimens are included here under the heading SPECIMENS OF SPECIAL INTEREST. These were collected either by the collector of the type (for example, see A.D.E. Elmer), or by the botanist who named the taxon; or, alternatively, has been determined to be unique enough to separate it out from the general collection. We have also included Paratypes in the belief that their listing will provide a useful resource to botanists engaged in preparing revisions and monographic works.
In order to help clarify or rank TYPE specimens according to their value by the author, different levels of TYPE specimens are designated. They are:
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Last Updated June 25, 2004 1:36 PM
URL = http://www.usna.usda.gov/Research/Herbarium/BotType.html