Click Here To Visit The SRGC Main Site
The discussion if Sternbergia sicula and lutea are one or two species is quite interesting, I personally would think they are two with intermediate forms, but this opinion is only based in a few cultivated forms and not in observations in their natural enviroment. Here two I would call S. sicula and S. lutea (now with a bit of sun ). The next two look intermediate: "S. lutea var. angustifolia" - MS 754 - looks like a huge S.sicula and "S.angustifolia" (Paul Christian) looks more like a small S. lutea.
Very interesting Hans. My plant of S. lutea angustifolia MS753 looks somewhat different to yours - I have posted a pic in the thread on "Virus Symptoms". The plant I had from Paul Christian as S. angustifolia looks exactly like a form of S. sicula!
Here two more pics which make it easier to see the size of both "angustifolia".