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Hans, in my oppinion, I considered in Narcissus it is very important the geographical distribution because it has had evolutive consecuences, it is having and it will have consecuences. An example of my observations in the nature about it: N. bulbocoidium L. it's a plant that grows in Toledo, Ciudad Real, Extremadura.. in the places where it is growing with N. jonquilla, N. cantabricus, N. triandrus subsp. pallidulus... When the blooming time between N. bulbocodium L. and N. cantabricus it's the same (due the environmental conditions), they produce hybrids in both directions and the procces of speciation starts, evolving to N. albicans. The opposite case in the same crosses between N. nivalis and N. cantabricus, here there is only one direction in this hybrid, and they won't evolve to another species. So, if we consider this as a valid process (not proove, just my theory) we could see that N. albicans has a geographical distribution similar to N. cantabricus and N. bulbocodium L. but you never will find N. albicans version in a N. nivalis distribution.Imagine N. x alleniae would be an species, the logical distribution will be Cádiz/North Morocco, where the parent lived in other time. Well this is the same, if we think in the rest of species, the problem is that we can't know the distribution of the ancient parents.Please, don't think this is a valid theory scientificly prooved, it is just my theory.
Maggi:Thanks, now if I could see the difference between this and other Cantabricus.....
What we need is a nice new monograph...
Quote from: annew on December 06, 2011, 12:15:31 PMWhat we need is a nice new monograph... Anne,Work, initiated by the RHS has already commenced on Section Bulbocodium. Collections have been made in many parts of Spain, Portugal and Morocco. Apprporiate molecular work, including DNA sequencing is taking place. Thankfully morphological considerations will not be ignored. This is one of my fears about the dedicated use of modern techniques where it might be possible for so many species with distinct morphological characterists being lumped together - to the further confusion of gardeners.Brian