Bryophyte herbarium TRH, NTNU University Museum

Specimen Records: 243,465

Media Records: 11,512

iDigBio Last Ingested Date: 2026-03-25

The TRH bryophyte herbarium contains specimes of Bryophyta, Marchantiophyta and Anthocerotophyta from most parts of the world, but is best represented for the Northern Hemisphere and especially northern parts of Europe. Almost the whole collection has been digitized. The oldest specimens in the collection is by Hans Strøm from 1745. Collections from the late 1800s and early 1900s comprise the foundation of this collection, primarily through the work of Ingebrigt Severin Hagen who worked at the NTNU University Museum from 1907 until his death in 1917. There was also a peak in activity from 1970-1980 mainly due to the joint efforts of A.A. Frisvoll and K.I. Flatberg. After 1998 the activity has again increased meaning that we have a relatively high proportion of recently collected specimens. Taxonomically Bryophyta constitute about 75% and Marchantiophyta 25% of the collection, with Anthoceratophyta with less than 1%. These numbers roughly represent the species diversity of the main taxonomic groups at northern latitudes. Sphagnum is particularly well represented with more than 25 000 specimens. Much of this is of rather recent date and a result of the taxonomic research by Kjell Ivar Flatberg. Schistidium and Racomitrium are other well represented genera due to the taxonomic work of Hans H. Blom and A.A. Frisvoll. The collection includes more than 2000 type specimens of bryophytes. The top ten countries/areas are: Norway, Svalbard with Jan Mayen, Sweden, United States of America, Canada, Germany, Greenland, France, Iceland and the Russian Federation. Svalbard is very well represented with close to 20 000 occurrences, the main contributor to this material is Arne A. Frisvoll that visited Svalbard and Jan Mayen several times during the 1970’s. Important exsiccatae includes: Hepaticae Europaeae Exsiccatae, Victor F. Schiffner Musci Alleghanienses, William S. Sullivant Musci Europaei Exsiccati, Ernst Bauer Bryotheca Bohemica. Laub- und Lebermoose aus Böhmen in getrockneten Exemplaren, Bauer, Ernst Musci Frondosi Archipelagi Indici Exsiccati, Max Fleischer Bryotheca Europaea Meridionalis, Fleischer, M.; Warnstorf, C.F.

Contacts

Name	Kristian Hassel
Role	Professor
Email	kristian.hassel@ntnu.no

Name	Kristian Hassel
Role	Professor
Email	none

Name	none
Role	none
Email	gbif-drift@nhm.uio.no

Name	Kristian Hassel
Role	Professor
Email	kristian.hassel@ntnu.no

Name	Tommy Prestø
Role	Collection Manager
Email	tommy.presto@ntnu.no

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.

Flag	Records With This Flag	(%) Percent With This Flag
idigbio_isocountrycode_added i	243061	99.834
dwc_continent_added i	239589	98.408
dwc_class_added i	187430	76.984
dwc_datasetid_added i	187430	76.984
dwc_family_added i	187430	76.984
dwc_kingdom_added i	187430	76.984
dwc_parentnameusageid_added i	187430	76.984
dwc_phylum_added i	187430	76.984
dwc_taxonid_added i	187430	76.984
dwc_taxonomicstatus_added i	187430	76.984
dwc_taxonrank_added i	187430	76.984
gbif_canonicalname_added i	187430	76.984
gbif_genericname_added i	187430	76.984
gbif_taxon_corrected i	187430	76.984
dwc_genus_added i	187414	76.978
dwc_order_added i	187385	76.966
dwc_specificepithet_added i	175313	72.007
dwc_scientificnameauthorship_replaced i	161550	66.355
gbif_vernacularname_added i	143092	58.773
gbif_reference_added i	122684	50.391
dwc_multimedia_added i	74187	30.471
geopoint_datum_error i	56339	23.14
dwc_originalnameusageid_added i	43699	17.949
taxon_match_failed i	23967	9.844
rev_geocode_eez i	22414	9.206
dwc_taxonremarks_added i	19102	7.846
rev_geocode_mismatch i	18719	7.689
geopoint_low_precision i	7676	3.153
dwc_infraspecificepithet_added i	3927	1.613
geopoint_datum_missing i	1353	0.556
dwc_country_replaced i	99	0.041
dwc_stateprovince_replaced i	32	0.013
rev_geocode_corrected i	12	0.005
rev_geocode_lon_sign i	12	0.005
rev_geocode_failure i	5	0.002
rev_geocode_eez_corrected i	2	0.001
geopoint_similar_coord i	1	0

Month of	Search	Download	Seen	Records Viewed	Media Viewed
04 / 2023	3,563,754,254	223,874	1,645	94	0
05 / 2023	2,836,878,747	354,003	1,444	0	0
06 / 2023	2,942,836,778	227,429	9,735	0	0
07 / 2023	2,823,037,560	907,954	4,263	0	0
08 / 2023	2,678,577,993	125	2,983	0	0
09 / 2023	3,404,540,910	461,559	4,698	0	0
10 / 2023	4,409,146,595	7,811,700	104,506	1	0
11 / 2023	3,886,234,142	739,883	1,254	0	0
12 / 2023	3,186,362,666	8	154,419	3	0
01 / 2024	5,395,155,910	10,326	136,713	0	0
02 / 2024	7,733,155,453	2,018,681	3,578	0	0
03 / 2024	7,819,091,738	32,029,263	1,613	24	14
04 / 2024	10,101,526,054	2,659,544	1,348	1	1
05 / 2024	42,102,163,844	23,539,814	3,908	108	73
06 / 2024	15,720,920,026	1,827,552	1,309	15	12
07 / 2024	9,020,939,048	5,511,999	2,048	6	10
08 / 2024	19,278,300,253	7,958,297	3,727	40	26
09 / 2024	18,249,279,542	458,930	18,324	15	11
10 / 2024	12,406,931,019	4,671,533	1,947	24	10
11 / 2024	15,690,748,551	353,050	2,331	12	4
12 / 2024	5,461,162,409	7	795	6	5
01 / 2025	14,356,130,786	0	5,536	23	19
02 / 2025	9,314,121,798	469,860	1,732	46	45
03 / 2025	5,825,641,054	3,056,937	1,646	7	4
04 / 2025	7,694,347,259	34,924	1,229	55	42
05 / 2025	6,117,727,885	234,210	1,128	25	17
06 / 2025	5,389,768,070	13,875	5,093	25	12
07 / 2025	557,378,930	2,365	61	1	0
08 / 2025	9,516,745,210	423	820	59	47
09 / 2025	7,340,159,851	700	2,067	16	3
10 / 2025	30,978,616,817	961,212	1,208,424	30	14
11 / 2025	60,587,441,446	295,173	468,354	119	84
12 / 2025	53,131,827,659	908,892	7,948	358	276
01 / 2026	18,674,891,503	40,629	24,366	358	278
02 / 2026	27,623,122,461	264,985	9,756	2,208	519
03 / 2026	29,503,012,490	1,057,849	12,765	2,016	248
04 / 2026	1,860,516,507	0	868	117	14

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Recordset

Bryophyte herbarium TRH, NTNU University Museum

Contacts