Ecosyste.ms: Packages

An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

conda-forge.org "itis" keyword

r-ritis 1.0.0
Integrated Taxonomic Information Service (ITIS) R client
6 versions - Latest release: over 3 years ago - 2 dependent packages - 15 stars on GitHub
r-taxizedb 0.3.0
Tools for Working with Taxonomic SQL Databases
2 versions - Latest release: over 3 years ago - 28 stars on GitHub