Omalotheca sylvatica – synonym of Gnaphalium sylvaticum
Ophrys aquisgranensis – synonym of Ophrys apifera
Ophrys arachnites – synonym of Ophrys apifera
Ophrys bicolor – synonym of Ophrys apifera
Ophrys botteronii – synonym of Ophrys apifera
Ophrys cordata – synonym of Listera cordata
Ophrys friburgensis – synonym of Ophrys apifera
Ophrys jurana – synonym of Ophrys apifera
Ophrys muscifera – synonym of Ophrys insectifera
Ophrys myodes – synonym of Ophrys insectifera
Ophrys nidus-avis – synonym of Neottia nidus-avis
Ophrys ovata – synonym of Listera ovata
Ophrys paludosa – synonym of Hammarbya paludosa
Ophrys ripaensis – synonym of Ophrys apifera
Ophrys spiralis – synonym of Spiranthes spiralis
Ophrys trollii – synonym of Ophrys apifera
Orchis bifolia – synonym of Platanthera bifolia
Orchis conopsea – synonym of Gymnadenia conopsea
Orchis fuchsii – synonym of Dactylorhiza fuchsii
Orchis fuchsii var. subsp. hebridensis – synonym of Dactylorhiza fuchsii hebridensis
Orchis haematodes – synonym of Dactylorhiza incarnata
Orchis hebridensis – synonym of Dactylorhiza fuchsii hebridensis
Orchis impudica – synonym of Dactylorhiza incarnata
Orchis incarnata var. subsp. atrirubra – synonym of Dactylorhiza incarnata coccinea
Orchis incarnata var. pulchella – synonym of Dactylorhiza incarnata pulchella
Orchis latifolia – synonym of Dactylorhiza incarnata
Orchis latifolia var. subsp. coccinea – synonym of Dactylorhiza incarnata coccinea
Orchis latifolia var. eborensis – synonym of Dactylorhiza majalis traunsteineroides
Orchis longibracteata – synonym of Dactylorhiza fuchsii
Orchis maculata subsp. ericetorum – synonym of Dactylorhiza maculata ericetorum
Orchis maculata subsp. okellyi – synonym of Dactylorhiza fuchsii okellyi
Orchis maculata var. okellyi – synonym of Dactylorhiza fuchsii okellyi
Orchis maculata var. trilobata – synonym of Dactylorhiza fuchsii
Orchis majalis subsp. traunsteinerioides – synonym of Dactylorhiza majalis traunsteineroides
Orchis majalis var. occidentalis – synonym of Dactylorhiza majalis occidentalis
Orchis mascula subsp. occidentalis – synonym of Orchis mascula
Orchis montana – synonym of Platanthera chlorantha
Orchis occidentalis – synonym of Dactylorhiza majalis occidentalis
Orchis okellyi – synonym of Dactylorhiza fuchsii okellyi
Orchis purpurella – synonym of Dactylorhiza majalis brevifolia
Orchis purpurella var. pulchella – synonym of Dactylorhiza majalis brevifolia
Orchis stabiana – synonym of Orchis mascula
Orchis strictifolia – synonym of Dactylorhiza incarnata
Orchis vernalis – synonym of Orchis mascula