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But what is it
Tsk! All these yellow things that look alike. If only they had...oh, I don't know...some little green markings that would help differentiate them from one another.
Dominique, I've just seen your beautiful pics of 11th March. How do you get N.calcicola to flower so freely? Is it covered (kept dry) in summer? I've never had so much flower from my own plants.
I have a pot of security in my bulb frame but that pic shows Narcissus calcicola (from around Coimbra) in the rock garden in the middle of stones without any protection, in full sun.