itis

is a Data Source.

It is part of the BER collection.

The Integrated Taxonomic Information System (ITIS) provides authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world. ITIS compiles standardized scientific names, common names, taxonomic serial numbers (TSNs), hierarchical classification, and associated metadata curated through interagency and international collaboration to support biodiversity data integration, ecological research, regulatory processes, and interoperability across biological information systems.

Domains

organisms, environment

License

Public Domain

Homepage

itis

Repository

Unknown

Infores ID

Unknown

FAIRsharing ID

Unknown

Product Summary

Products

From this Resource
ID Name URL Category Format Description
itis.portal ITIS Web Portal www.itis.gov GraphicalInterface http Web portal for browsing taxonomic rec...
itis.api ITIS REST Services ws_description.html ProgrammingInterface ❔ REST JSON services providing programm...
itis.download ITIS Data Download Package downloads Product ❔ Downloadable full database dump (Delo...
From other Resources
ID Name URL Category Format Description
obo-db-ingest.itis.obo itis OBO itis.obo (10.4 MB) Product obo itis OBO
obo-db-ingest.itis.owl itis OWL itis.owl.gz (13.9 MB) Product owl itis OWL
obo-db-ingest.itis.json itis OBO Graph JSON itis.json.gz (12.1 MB) Product json itis OBO Graph JSON
obo-db-ingest.itis.tsv itis Nodes TSV itis.tsv (9.1 MB) Product tsv itis Nodes TSV

Details

Overview

The Integrated Taxonomic Information System (ITIS) is a partnership of U.S., Canadian, and Mexican agencies, and other organizations, producing a curated reference of global taxonomic information. Each taxon is assigned a persistent Taxonomic Serial Number (TSN) that facilitates integration and reconciliation across biodiversity, ecological, and regulatory datasets.

Data Scope

  • Scientific and common names with synonymy and name usage
  • Hierarchical classification spanning kingdoms to species (and infraspecific ranks)
  • Authorship, publication, and nomenclatural references
  • Geographic data indicators and taxonomic status flags
  • Cross-references to other authoritative nomenclature sources where available

Access & Services

Programmatic access is provided via publicly available REST services returning JSON for record lookup, hierarchy traversal, and search queries. Bulk database downloads support offline integration and local analytics. OBO, OWL, and OBO Graph JSON exports are available via the OBO DB ingest transformation for ontology/graph workflows.

Licensing & Use

ITIS data are in the public domain. Users may copy and use the data freely with appropriate attribution recommended (e.g., citing ITIS and access date). See the access and data use policy page for details.

Citation

Integrated Taxonomic Information System (ITIS). www.itis.gov (Accessed YYYY-MM-DD).

Contact

General inquiries or technical questions: itiswebmaster@itis.gov. Additional support and documentation are available through the portal and web service description pages.

Is this information incorrect or incomplete? Request an update.

Created: September 03, 2025 | Last modified: September 03, 2025