This Rth. Dal's Emperor 'Allan' opened about 5 days or so ago. The tips of both petals are curled/rolled back a bit and the lip isn't quite evenly spread - but that's ok!
This one is a confirmed 'Allan' even though it is flowering with full yellow colour. It was mentioned to me that warm climate regions results in yellow in general - while cold climate (lower temperature) regions will yield the red colours inside the throat and pink around the lip rim.
Above: Rth. Dal's Emperor 'Allan'
Above: Rth. Dal's Emperor 'Michelle' (left) and Rth. Dal's Emperor 'Allan' (right)
Above: Rth. Dal's Emperor 'Michelle' (left) and Rth. Dal's Emperor 'Allan' (right) - nice sunlight shining on the flowers.
Above: Both grown in quincan gravel (name for the locally obtained scoria/volcanic rock - pronounced 'kwing-kun' gravel)
DAL = David Arthur Littman