The New Zealand Virtual Herbarium (NZVH) website enables a single query to access specimen records from 11 participating members of the New Zealand National Herbarium Network. The data are derived from the information associated with specimens at each of the herbaria which have been collected for scientific research, particularly systematics. It is therefore important to note that the data represent the state of specimens in the herbaria, some or many of which may not yet have been updated; furthermore, the herbaria do not all identify their collections according the same botanical treatments.
The data are also retrieved and displayed as they are provided by each herbarium, including uncertainties, data errors and difference in data entry standards. Thus the patterns of the NZVH are indicative rather than absolute, and may not be suitable for applications that require a high level of precision.
Search terms are case insensitive. 'Raoulia' and 'raoulia' will return the same records.
The wildcard is '%'. 'alb%' will return 'alba', 'albosericea', 'albida', 'albovirens', 'albicans' etc. The wildcard can be placed either side of the search term, or both, to make the desired pattern. However, a wild card at the start of the query value will significantly slow a search.
The query form has drop down lists for querying taxon names.
You can query using scientific names by entering query values into one or all of the genus, species and infraspecific name fields.
It is important to note that different herbaria may not follow the same system of classification, so you may need to query on a synonym in order to retrieve matches from all herbaria.
The following resources provide authoritative information on plant names and synonomy:
If there is any doubt about the identification of a plant, the record should contain one of the following qualifiers:
To include uncertain identification tick the box under Include Uncertain Identifications.
Three types of output are available: html, csv and maps.
When interpreting these data please note that there are difference between herbaria in the data provided and the data entry standards that are used.
The fields provided in html and csv formats are: Genus, species, infraspecific rank, infraspecific name, Identification Qualifier, Scientific Name, Herbarium Source, Record Suffix (Accession number), Latitude, Longitude, Nearest named place, State (Province), Country, Collection Date, Collector, Additional collectors, Geocode Precision, Coordinate Error Method, Date Last Edited.
Maps will provide an overview of a taxons distribution. However, the maps are based solely upon specimen records that have georeference data available, and will not provide access to all the specimen data available from the herbaria. To query for these data select the html or csv output type.
The following layers can be displayed on the map.
Four display options are available.
Use the navigation buttons above table header to move through the results pages. The scroll bar at the bottom of the table allows you to view the fields that don't fit within the table window.
By default, your query results will be ordered by herbarium and accession number. The data can be sorted by clicking on the column header. Clicking on the same column header again will change between ascending and descending sorting.
Note that, because some accession numbers include letters, the accession numbers are treated as text and can not be ordered numerically.
This output type will create a comma delimited text file that can be opened with most text/document editor or spreasheets. The file can be saved or opened directly.