Rhinanthus oesilensis (Ronniger & Saarsoo) Vassilcz. ― Synonym of Rhinanthus osiliensisMentioned in the following international legal instruments and agreements:
EU Habitats Directive
- Annex II: animal and plant species of community interest whose conservation requires the designation of special areas of conservation.
- Annex IV: animal and plant species of community interest in need of strict protection.
- Revised Annex I of Resolution 6 (1998) of the Bern Convention listing the species requiring specific habitat conservation measures (year of revision 2011)