Ian - in their recent paper on Sternbergia, Ewan Gage & Paul Wikin argue that, with respect to the characters previously used to distinguish S. lutea, S. sicula & S. greuteriana as separate taxa, variation is continuous. Consequently, the taxa cannot be maintained as distinct. I find their arguments as convincing as any arguments of this kind can be. I accept that it might be useful to regard S. greuteriana (as represented in cultivation) as horticulturally distinct but I am persuaded that it cannot be regarded as botanically distinct.