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Recordset

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Northern Illinois University Herbarium

Specimen Records: 17,420
Media Records: 17,916
iDigBio Last Ingested Date: 2025-06-23

The herbarium at NIU is an internationally recognized systematic collection, initiated in the 1960s and enlarged significantly during the 1970s to the present. Holdings presently total about 23,000 specimens of vascular plants plus an additional 8000 bryophytes. A large number of the bryophytes in the collection (about 6000 specimens) are on permanent loan to MO (Missouri Botanic Garden). Special collections include a definitive collection of the genus Dahlia, which contains holotypes and isotypes plus a thoroughly documented array of hybrids between authenticated wild species. A second important collection is of Arbutus that also includes type material. The troublesome genus Agrimonia is more completely documented at DEK than at any other herbarium in the world. In Zygophyllaceae, there is a substantial collection of species of Guaiacum, for which sequenced marker loci are indicated. The collection also emphasizes grassland species and those for which genetic resources, especially complete plastome sequences, are available. DEK presently maintains exchange relationships with more than 26 domestic and 6 foreign herbaria. As a consequence, coverage, while emphasizing the flora of Illinois, is worldwide.

Contacts

Namenone
Rolenone
Emailhbrown@mailbox.sc.edu
Namenone
Rolenone
Emailhbrown@mailbox.sc.edu
Namenone
Rolenone
Emailpsorensen@niu.edu
Name Paul Sørensen
RoleBotanist, Professor Emeritus and former curator
Emailpsorensen@niu.edu
Name Mel Duvall
RoleCurator and Professor Emeritus
Emailmel-duvall@niu.edu
Name Paul Sørensen
RoleBotanist, Professor Emeritus and former curator
Emailpsorensen@niu.edu
Name Mel Duvall
RoleCurator and Professor Emeritus
Emailmel-duvall@niu.edu
  • Data Corrected
  • Data Use
  • Raw
This table shows any data corrections that were performed on this recordset to improve the capabilities of iDigBio Search. The first column represents the correction performed. The last two columns represent the number and percentage of records that were corrected. A complete list of the data quality flags and their descriptions can be found here. Clicking on a data flag name will take you to a search for all records with this flag in this recordset.
FlagRecords With This Flag(%) Percent With This Flag
idigbio_isocountrycode_added  i17395
99.856
dwc_continent_added  i17388
99.816
dwc_datasetid_added  i14625
83.955
dwc_parentnameusageid_added  i14625
83.955
dwc_phylum_replaced  i14625
83.955
dwc_taxonomicstatus_added  i14625
83.955
gbif_canonicalname_added  i14625
83.955
gbif_genericname_added  i14625
83.955
gbif_taxon_corrected  i14625
83.955
dwc_taxonid_replaced  i14622
83.938
gbif_vernacularname_added  i13911
79.856
dwc_class_added  i13849
79.501
dwc_multimedia_added  i12191
69.983
gbif_reference_added  i12022
69.013
dwc_scientificnameauthorship_replaced  i9625
55.253
dwc_taxonrank_replaced  i8411
48.284
taxon_match_failed  i6589
37.824
dwc_originalnameusageid_added  i3194
18.335
dwc_taxonremarks_added  i1628
9.346
dwc_specificepithet_replaced  i1188
6.82
geopoint_low_precision  i704
4.041
dwc_genus_replaced  i479
2.75
dwc_infraspecificepithet_added  i353
2.026
dwc_family_replaced  i325
1.866
dwc_scientificnameauthorship_added  i273
1.567
rev_geocode_eez  i240
1.378
dwc_kingdom_suspect  i95
0.545
dwc_class_replaced  i33
0.189
dwc_order_replaced  i25
0.144
rev_geocode_mismatch  i17
0.098
dwc_infraspecificepithet_replaced  i10
0.057
geopoint_datum_missing  i9
0.052
dwc_acceptednameusageid_added  i5
0.029
dwc_genus_added  i4
0.023
dwc_country_replaced  i3
0.017
dwc_specificepithet_added  i3
0.017
dwc_stateprovince_replaced  i3
0.017
dwc_taxonid_added  i3
0.017
dwc_taxonrank_added  i3
0.017
datecollected_bounds  i2
0.011
dwc_taxonremarks_replaced  i2
0.011
rev_geocode_corrected  i2
0.011
geopoint_datum_error  i1
0.006
rev_geocode_failure  i1
0.006
rev_geocode_lat_sign  i1
0.006
rev_geocode_lon_sign  i1
0.006
specimen list