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Jumellea sagittata

Discussion in 'Orchid Species' started by gg68, Dec 21, 2013.

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  1. gg68

    gg68 Angraecoid addict

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    Since 2012 for Kew this species is now a synomym of J.arachnantha, but I don't agree with that.
    I asked some friends, J.Hermans for example, and they all agree with me...

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  2. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    I love the fragrance on these, but in the end the size is more space than I'm willing to give. I wonder whose work Kew is basing this on? Also, I can you tell me the difference between the two species? I've never been sure which one(s) I had.
     
  3. gg68

    gg68 Angraecoid addict

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    The most significant differences are leaves size (really bigger for J.arachnantha), the number of flowers and the blooming season.
     
    Last edited: Dec 21, 2013
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  4. Mikehitch

    Mikehitch New Member

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    Oddly enough, Kew sites Hermans as being in agreement with the change of name and in confirmation they cite his joint publication as follows:Cribb, P., Hermans, J. & Rakotoarinivo, M. (2009). Field Guide to the Orchids of Madagascar: 1-456. Kew Publishing, Royal Botanic Gardens, Kew. I also note that Hermans' publication was published by Kew Publishing. When push comes to shove the name accepted by Kew and indeed the AOS as well as all other major societies is "Jumellea arachnantha" despite any other personal opinions. Nomenclature of orchids is difficult enough for the rest of us without complete acceptance of the good with the bad decisions.
     
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  5. gg68

    gg68 Angraecoid addict

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    Everybody knows that Kew is sometimes wrong....

    There are a number of other nomenclature changes in the work. But without checking everything and studying the genus further it is difficult to argue against the results. Much of it was based on DNA but the question is whether the identifications of the material used was correct !

    I have these two species and it is impossible to say that they are similar. The fact that , grown in the same conditions, they bloom in radical different seasons, is quite significant!!

    So, if they are really the same species, according to these différences and to their different origin (Madagascar and Comore), the least we can is to put A.sagittata as a variety of J.arachnantha!!
     
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  6. Mikehitch

    Mikehitch New Member

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    I suppose it may also be said that your A sagittata could possibly be incorrectly named, however, the alternative you offer carries equal weight. I have an acquaintance that is a member of the Kew nomenclature committee and with the sheer number of committee members, the infrequency of their meetings (annually), and the individual self interests of some of the members, it amazes me that they can agree on the spelling of 'orchid' let alone whether A.sagittata could be a variety of J.arachnantha. The self interest of the various 'botany type' scientists is an important aspect of the nomenclature side of our hobby. Never the less we need some sort of Kew type organisation to make determinations regardless. Occasionally they will be wrong, mostly they will be right, just like the rest of us!
     
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  7. gg68

    gg68 Angraecoid addict

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    Of course my comment is not based on my single plant, but on others I've seen all around Europe, in orchidshows or in botanical gardens.