Destructive
Sampling Policy
The
judicious dissection of specimens is normally permitted for those
involved in research projects. The permanent removal of plant
material (i.e., destructive sampling) must be approved by the curator
for purposes such as SEM studies, DNA sampling, and anatomical and
palynological investigations. Before any sampling can be
undertaken, a 'Destructive Sampling Agreement' must be signed and
returned to the Curator.
Approval
- Material may not be removed from herbarium specimens without
approval from the curator. Permission is granted on a case-by-case
basis and is contingent upon receipt of a signed 'Destructive
Sampling Agreement.'
Requests
- Requests for destructive sampling must detail the taxa and
specimens involved, the procedures to remove material, and the method
of preparation for study.
Sampling
- Samples may be removed only when there is sufficient material on a
sheet and when damage to the specimen can be avoided. Ideally,
material should be taken from fragment packets.
Limitations
- Material may not be obtained from type specimens, important
historical collections, or taxa represented in the herbarium by few
specimens (except in rare circumstances).
Annotations
- Each sheet must be annotated indicating the type of material removed, the name and institution of the researcher, the nature of the study, and the date of removal. See comments on annotations under Loan Policy for guidelines on preparation of annotation labels.
Data
- Images of material used for SEM or light microscopy should be
deposited in the herbarium. Such images should include the taxon
name, collector and collection number, OKL accession number, and
method of preparation. Any DNA sequence data derived from these
specimens should be deposited with GenBank and the GenBank accession
number placed on the annotation label.
Resulting
Publications - One copy of a publication based upon specimens
from OKL should be sent for deposit in the herbarium library.
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