Heinie,
Are you sure that
filifolia and
filamentosa are synonyms? My
filifolia look nothing like your pics, at the very least. If the name has changed then I am guessing that
filamentosa was an aberrant colony of
filifolia or something? Still distinct enough to keep separate in a collection, whatever it is called. I wish it would flower as easily as
filifolia.
I associate that elongated stamens look with
filamentosa, from the one time I flowered it many years ago. It still lives, but has never flowered for me since, nor offset, nor done anything much than a few leaves every year.
It's lovely to see your Nerines in flower...... no sign of anything like that here as yet.