- Alien plants of Belgium [1]
- American Bryological Lichenological Society (ABLS) [1] [2]
- American Society of Plant Taxonomists [1]
- Anthos (España) [1]
- Austrian Zoological-Botanical Society (ÖZBG) [1]
- Basler Botanische Gesellschaft (BBG) [1] [2]
- BioNetworX [1] [2]
- Botanical Society of America [1]
- Botanical Society of Britain and Ireland
- Botanical Society of Geneva [1]
- Botanical Society of Scotland [1]
- Botanische Gesellschaft Genf [1]
- British Bryological Society (BBS) [1]
- British Ecological Society [1]
- Canandaigua Botanical Society [1]
- California Lichen Society (CALS) [1]
- Colegio Oficial de Biólogos (España) [1]
- Conservation of Steppes in Russia [1]
- Conservatoire botanique national du Bassin parisien [1]
- Croatian Botanical Society [1]
- Czech Botanical Society (CBS) [1] [2] [3] [4] [5]
- Danish Botanical Society [1]
- Dansk Botanisk Forening [1]
- Deutsche Gesellschaft für Limnologie (DGL) [1]
- Die Basler Botanische Gesellschaft (BBG) [1] [2]
- Die Botanische Gesellschaft Genf [1]
- Die Deutsche Botanische Gesellschaft (DBG) [1]
- Die Deutsche Gesellschaft für Limnologie e.V. [1]
- Die Regensburgische Botanische Gesellschaft [1]
- Die Schweizerische Botanische Gesellschaft (SBG) [1] [2]
- Die Zürcherische Botanische Gesellschaft (ZBG) [1]
- Diversitas Deutschland [1]
- ECNC-European Centre for Nature Conservation [1]
- Ecological Society of Germany, Austria and Switzerland [1]
- Ελληνική Βοτανική Εταιρεία (Ε.Β.Ε.) [1] [2]
- European Dry Grassland Group (EDGG) [1]
- European Heathlands Network [1] [2]
- European Ecological Federation (EEF) [1]
- European Vegetation Survey (EVS) [1]
- European Weed Research Society (EWRS) [1]
- Flora Europaea [1]
- Flora Iberica [1]
- Flora Nordica [1]
- Flora of King Edward Point & Grytviken [1]
- Flora of the Falkland Islands [1]
- Floristisch-soziologischen Arbeitsgemeinschaft e.V. (FlorSoz) [1] [2]
- Floron [1]
- Falkland Islands flora [1]
- German Botanical Society [1] [2]
- German Limnological Society [1]
- Gesellschaft für Ökologie [1]
- Gesellschaft zur Erforschung der Flora Deutschlands [1] [2]
- Global Biodiversity Information Facility (GBIF) [1] [2]
- Global Restoration Network (GRN) [1]
- Hellenic Botanical Society (HBS) [1]
- Hrvatsko Botaničko Društvo, Zagreb, Croatia [1] [2]
- Hyporheic Network [1]
- Hyporheisches Netzwerk [1]
- Illinois Mycological Association [1] [2]
- International Association of Bryologists (IAB) [1] [2]
- International Association for Landscape Ecology (IALE) [1] [2]
- International Association for Lichenology [1]
- International Association for Vegetation Science (IAVS) [1] [2]
- International Association of Wood Anatomists (IAWA) [1] [2]
- International Biogeography Society (IBS) [1] [2] [3]
- International Plant Names Index [1]
- International Society of Environmental Botanists (ISEB) [1]
- Koninklijke Belgische Botanische Vereniging [1]
- Koninklijke Nederlandse Botanische Vereniging [1]
- La Societa' Botanica Italiana (S.B.I.) [1] [2]
- La Société Botanique de France (SBF) [1]
- Naturschutz Niedersachsen / NLWKN [1]
- Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz (NLWKN) [1]
- Norsk Botanisk Forening
- North American Mycological Association (NAMA)
- Northern Ontario Plant Database (NOPD) [1]
- Norwegian Botanical Association [1] [2] [3] [4]
- Ontario Society for Ecological Restoration
- Planta Europa [1] [2] [3] [4] [5]
- Polish Botanical Society [1] [2]
- Regensburg Botanical Society [1]
- Royal Botanical Society of the Netherlands (KNBV) [1]
- Russian Botanical Society
- Schweizerische Botanische Gesellschaft (SBG) [1] [2]
- SER Ontario (SERO)
- Slovak Botanical Society [1]
- Slovenská botanická spoločnosť
- Societa' Botanica Italiana (S.B.I.) [1] [2]
- Société Botanique de France [1]
- Société botanique de Genève [1]
- Société Botanique du Centre-Ouest [1] [2]
- Société Royale de Botanique de Belgique [1]
- Society for Conservation Biology (SCB) [1]
- Society for Conservation Biology (SCB) - Europe Section [1]
- Society for Ecological Restoration (SER) [1] [2] [3]
- Society for Ecological Restoration Australasia (SERA)
- Society for Ecological Restoration (Europe) [1]
- Society for Ecological Restoration, Ontario Chapter, Canada
- Society of Systematic Biologists [1]
- Sophy - Banque de données Botaniques et Ecologiques [1]
- Southern African Society for Systematic Biology
- Svenska Botaniska Föreningen [1]
- Swedish Botanical Society [1]
- Tela Botanica - Le réseau de la botanique francophone [1] [2]
- The Botanical Society of Geneva [1]
- The California Lichen Society (CALS) [1]
- The European Dry Grassland Group (EDGG) [1]
- The European Heathlands Network [1] [2]
- The European Weed Research Society (EWRS) [1]
- The Flora of King Edward Point & Grytviken [1]
- The Global Biodiversity Information Facility (GBIF) [1] [2]
- The IUCN/CEM Global Thematic Group "Holarctic Steppes" [1]
- The Northern Ontario Plant Database (NOPD) [1]
- The Plant List [1]
- The Royal Botanical Society of Belgium [1]
- The Russian Botanical Society
- Vifabio - Die virtuelle Fachbibliothek Biologie [1]
- Vifabio - The Virtual Library of Biology [1]
- Zürcherische Botanische Gesellschaft (ZBG) [1] [2]