This dataset is a directory of BRAHMS Online botanical database websites contributed by participating institutions and projects. It contains website names, hosting servers, contact persons, and brief descriptions for online resources such as the Oxford University Herbaria and numerous Royal Botanic Gardens, Kew initiatives focused on UK Overseas Territories and related conservation programs. The entries cover herbarium and xylarium collections, specimen databases, taxonomic resources, and project-specific plant conservation sites, including Oxford’s collection of 800,000 to 1,000,000 botanical specimens and at least 25,000 type specimens. Its purpose is to help users locate and access distributed plant biodiversity, collection management, and conservation information hosted through BRAHMS Online.