• - Acanthaceae
• - Aizoaceae
• - Alismataceae
• - Amaranthaceae
• - Amaryllidaceae
• - Anacardiaceae
• - Apiaceae
• - Apocynaceae
• - Araceae
• - Araliaceae
• - Aristolochiaceae
• - Asparagaceae
• - Asphodelaceae
• - Aspleniaceae
• - Asteraceae
• - Balsaminaceae
• - Basellaceae
• - Betulaceae
• - Bignoniaceae
• - Boraginaceae
• - Brassicaceae
• - Butomaceae
• - Cactaceae
• - Campanulaceae
• - Cannabaceae
• - Cannaceae
• - Capparaceae
• - Caprifoliaceae
• - Caryophyllaceae
• - Celastraceae
• - Ceratophyllaceae
• - Characeae
• - Cistaceae
• - Colchicaceae
• - Commelinaceae
• - Convolvulaceae
• - Cornaceae
• - Crassulaceae
• - Cucurbitaceae
• - Cupressaceae
• - Cymodoceaceae
• - Cyperaceae
• - Cystopteridaceae
• - Cytinaceae
• - Dennstaedtiaceae
• - Dioscoreaceae
• - Dryopteridaceae
• - Elaeagnaceae
• - Elatinaceae
• - Ephedraceae
• - Equisetaceae
• - Ericaceae
• - Euphorbiaceae
• - Fabaceae
• - Fagaceae
• - Frankeniaceae
• - Gentianaceae
• - Geraniaceae
• - Haloragaceae
• - Hydrocharitaceae
• - Hypericaceae
• - Iridaceae
• - Isoëtaceae
• - Juglandaceae
• - Juncaceae
• - Juncaginaceae
• - Lamiaceae
• - Lauraceae
• - Lentibulariaceae
• - Liliaceae
• - Linaceae
• - Lythraceae
• - Malvaceae
• - Meliaceae
• - Molluginaceae
• - Moraceae
• - Myrtaceae
• - Nyctaginaceae
• - Nymphaeaceae
• - Oleaceae
• - Onagraceae
• - Ophioglossaceae
• - Orchidaceae
• - Orobanchaceae
• - Oxalidaceae
• - Paeoniaceae
• - Papaveraceae
• - Passifloraceae
• - Phyllanthaceae
• - Phytolaccaceae
• - Pinaceae
• - Plantaginaceae
• - Platanaceae
• - Plumbaginaceae
• - Poaceae
• - Polygalaceae
• - Polygonaceae
• - Polypodiaceae
• - Pontederiaceae
• - Portulacaceae
• - Posidoniaceae
• - Potamogetonaceae
• - Primulaceae
• - Pteridaceae
• - Ranunculaceae
  • - Adonis
  • - Anemone
  • - Clematis
  • - Consolida
  • - Delphinium
  • - Ficaria
  • - Helleborus
    • - H. odorus
      • subsp. cyclophyllus
  • - Nigella
  • - Ranunculus
  • - Staphisagria
• - Resedaceae
• - Rhamnaceae
• - Rosaceae
• - Rubiaceae
• - Rutaceae
• - Salicaceae
• - Santalaceae
• - Sapindaceae
• - Saxifragaceae
• - Scrophulariaceae
• - Selaginellaceae
• - Simaroubaceae
• - Smilacaceae
• - Solanaceae
• - Tamaricaceae
• - Thelypteridaceae
• - Thymelaeaceae
• - Tropaeolaceae
• - Typhaceae
• - Ulmaceae
• - Urticaceae
• - Verbenaceae
• - Viburnaceae
• - Violaceae
• - Vitaceae
• - Zosteraceae
• - Zygophyllaceae

Annotation: As suggested by Heldreich, only this Helleborus species can be assumed to occur as indigenous plant on Cephalonia (Heldreich 1882: 20) in respect to Dallaporta’s report of »H. niger« (Dallaporta 1821: 79: »in alcune situazioni di quest’isola«) but it was not mentioned in Phitos & Damboldt (Phitos & Damboldt 1985) nor is there any other record. [2016-01-17]

Taxonomic references ("taxonyms")

linked to standard floras (PFB, FE, FE2, FH) and annotated checklists (AFE, VPG) giving direct reference to occurrences of plant taxa on the Ionian Islands: