This caulescens is slightly different, in comparison with the one I posted before (taller spike, and no sign of yellow in the lip). Another possibilty is that one belonging to another species (L tereticaulis?) and it was misidentified (but tereticaulis often has lots of flowers per spike...). I'll need help from my botanic friends!
Check out this link .. a pictorial of laelias Rupicolous Laelias
I just love them and thought I'd add this to the post for those that have not seen it before