The OVPD provides the citizens of Oklahoma, the scientific
community, and others with the most current knowledge of Oklahoma
plant distributions. The goal of the OVPD project is to database
all Oklahoma Plant specimens housed in state herbaria.
Specimen data have been recorded from the Bebb Herbarium
(OKL) at the University of Oklahoma, and the herbaria at Oklahoma
State University (OKLA), the University of Tulsa (TULS), University
of Science and Arts of Oklahoma (OCLA), Northeastern State
University (NSU), Northwestern Oklahoma State University (NWOSU),
Southeastern Oklahoma State University (SEOSU), Cameron University
(CAMU), Oklahoma Panhandle State University, Oklahoma Biological
Station, and the Botanical Research Institute of Texas (BRIT).
Currently, there are 155,000+ specimens in the database.
For each specimen, all information provided on the specimen
label and annotation history are recorded. However, with an
estimated 262,000 specimens of Oklahoma plants residing in
state herbaria, the work is far from complete. Some taxa are
more thoroughly represented than others. It is recommended
that you visit the OVPD website regularly in order to view
the most recent data. Also, note that the taxonomy follows
the USDA Plants Database.
The website is composed of two major search options. The
first allows you to generate a species list for a selected
Oklahoma county. When viewing these results, it is important
to remember that the species list is generated from herbarium
records. If a botanist has not collected a plant in your county
and deposited a voucher specimen at one of the state herbaria,
it will not appear on the list. Consequently, the number of
species records for some counties are low. In many cases we
actually know of/or suspect the presence of a species in a
county, but it is not listed until a specimen has been collected.
Once a specimen has been deposited in an herbarium, it will
be added to the database.
The second search option generates a map showing the distribution
of a selected species. Upon searching for the species of interest,
the results page returns a list of all specimens currently
recorded in the database. At the top of the page is a "map
results" option. When you click this button, a map is
generated of the distribution of species by county. If you
click on a county, a list of specimens for that species in
the selected county will be displayed.
The Oklahoma Vascular Plant Database could not have been created
without the effort of many individuals and generous financial
We thank Deborah Benesh for designing the original MS-Access
We thank the following people for the many hours of data
entry: Ravi Balaga, Christy Batterson, Lacy Brookshire, Sreedevi
Chadrasekaran, Cory Couch, Kate Crosthwaite, Richard Duffy,
Forrest Johnson, Naga Jonnalagedda, Katy Levings, Marco Micozzi,
Elizabeth Nguyen, Rebecca Pepper, Amy Ramsey, Heather Read,
Tushar Shah, Eric Snyder, Sudha Venkataraman, Kyle Wallick,
and Christa Welch.
This work was supported in part by the National Science Foundation;
the environmental Protection Agency; and the Oklahoma Biological