This is some kind of brassavola species . But i ? that because look at the leaf in the picture. not the normal looking tereted leaves. Another from the really old collection that i have been given.
Brassavolas are not limited to distinctly terete leaves. Several species (nodosa, venosa, cordata/subulifolia) of this general flower shape can have rather broad flatter leaves, especially nodosa var. grandiflora. I see no reason to doubt it being one of these. Hybrids of these species would be possible too, but less likely in an old collection.
thanks i didn't know those species could have wider leaves . I will have to be doing more research i wish the person was still around of these couple of differant orchids i was given . I know a lot of them were collected in the wild many years ago. Not that i agree with that but i think thats how things got around back then.
The yellow green sepals / petals remind of Brassavola cordata, but cordata has a heart-shaped lip and a higher flower count per spike. I am guessing that this is a cordata hybrid - Little Stars (nodosa x cordata) perhaps?