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Bulbophyllum from the section Epicrianthes

This is a discussion on Bulbophyllum from the section Epicrianthes within the Orchids of Other Genera IN BLOOM forums, part of the Orchid Photography category; Could you show me an intermediate species between say, section Epicrianthes and Sestochilus ? Or ...

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  1. #11
    jimec's Avatar
    jimec is offline Senior Member
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    Could you show me an intermediate species between say, section Epicrianthes and Sestochilus? Or Cirrhopetalum and Epicrianthes?

    Jim Cootes

  2. #12
    Rogier is offline Junior Member
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    Quote Originally Posted by jimec View Post
    Could you show me an intermediate species between say, section Epicrianthes and Sestochilus? Or Cirrhopetalum and Epicrianthes?

    Jim Cootes
    Dear mister Cootes.
    Although your question seems a more retorically intended one than one out of true interest I wil nevertheless try to anwser it.

    Epicrianthes stand quite far from the sections that you gave above. It needs a long list of pictures to show you that. Pictures of species that I sadly do not have.
    Next to that the DNA tree of live is not finished so a true anwser based on scientific facts can not be given as yet.

    But here I show you (and the other readers) a line of pictures of what very well could be a branch of this tree of life.

    Cirrhopetalum to Sestochilus

    First a real Cirrhopetalum. B. (or C. if you wish) longiflorum is one of the few Bulbophyllums that still belong to the section Cirrhopetalum


    Next Bulbophyllum annandalei. Not a very big step. Especially things like colouration change very easily even within one species


    You could very well stil call this a Cirrhopetalum.

    Then the sepals are no longer atached. A very simple adjustment but if gives the flower a whole other look.
    Next step Bulbophyllum bicolor.


    Everything flattens out a bit.
    And here we have Bulbophyllum lobbii a typical Sestochilus


    I admit that this is a very blunt way of showing but I hope you get my point.
    I can make you another branch by using completely different species. Thats why we need DNA to sort these things out for real.

    From something as B. lobbii, evolution could go onwards into the direction of

    Bulbophylum gerlandianum


    or Bulbophyllum deviantiae


    and maybe, eventually a simple Epicrianthes such as Bulb. cheiropetalum


    Personally I have the feeling that the section lepanthanthes lies between the Epicrianthes and the other Bulbophyllum or at least hoovering close by.
    I have no pictures of species from that section except of this undescribed species.



    But species from this section such as Bulbophyllum inquirendum an B. lepanthiflorum are much more similar to the Epicrianthes having teh same pendent growth habit as most Epicrianthes and also carying the beautifull calli on the lip.

    To make this long story a little bit longer. As you know there isn't a trua right or whrong in nomenclature. That's because we humans invented taxonomy and want to name everything. As long as humans have different ways of looking at things you cannot expect sciense to be as absolute as we hope it to be.

    many regards

    And have a happy new year (wich is right about starting in some places of the planet.

    Rogier

  3. #13
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    hi rogier,
    thanks for showing these and taking your time!
    i guess you are personally involved in the DNA testing and i find it very interesting. still leaves some questions, lets say all those sharing the same DNA, wouldnt it be still better not to lump them into one genus for reasons like: different growth habit, flowers in general, inflorescence...etc...?
    i mean, apart from placing species into their section.

    i know, this will be always tricky and a probably neverending discussion in the orchid world...

    one thing also puzzles me, the correct spelling of Epicrianthes, which is also found as Epicranthes, so which is it?

  4. #14
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    Dear Rogier,

    Thank you for going to the effort to show your point. For an old cynic like me, I will never be convinced that members of section Cirrhopetalum and section Sestochilus are members of the genus Bulbophyllum. One only has to look at the growth habit of the plants to see the differences. DNA cannot be seen, and it can be manipulated to suit whatever point one is trying to make. If you are the photographer of the above images I must commend you on your wonderful pictures.

    All the best for the New Year to you,

    Jim Cootes

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