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Thread: Random pics

  1. #233
    hcarlton's Avatar
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    New arrivals...
    D. filiformis var. floridana "white flower" by Hawken Carlton, on Flickr
    This one I am particularly excited about, especially as it's already growing like a weed
    D. anglica x tracyi -"Southern Cross" by Hawken Carlton, on Flickr
    And a funky personal hybrid pic as well
    D. tokaiensis x intermedia "Easton, MA" by Hawken Carlton, on Flickr
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    I was wondering how anglica x filiformis would look. Thanks for posting the photo.

  3. #235
    Lotsa blue bluemax's Avatar
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    The anglica x filiformis is very cool. It's not like anything else I've seen.
    - Mark

  4. #236
    hcarlton's Avatar
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    D. anglica x tracyi, not x filiformis. They are separate species.
    Everything has a reason, whether big or small. Never underestimate the power of what is or is not.
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  5. #237

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    Quote Originally Posted by bluemax View Post
    The anglica x filiformis is very cool. It's not like anything else I've seen.
    Yes, neat and unique. But sadly too tall for my indoor lighting setup.

    Quote Originally Posted by hcarlton View Post
    D. anglica x tracyi, not x filiformis. They are separate species.
    The two are interfertile, so why split? Don Schnell gives more reasoning for calling the two varieties in his book.

  6. #238
    hcarlton's Avatar
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    Quote Originally Posted by FrankenSnyder View Post
    Yes, neat and unique. But sadly too tall for my indoor lighting setup.



    The two are interfertile, so why split? Don Schnell gives more reasoning for calling the two varieties in his book.
    All Nepenthes are interfertile, as is everything in the petiolaris complex, all Sarracenia, all Heliamphora, many orchids across genera are interfertile, jumping to my other hobby North American rat snakes and king/milk snakes (entirely separate genera with multiple species and have been for at least a few million years) are interfertile and both with gopher snakes too, nearly all pythons are interfertile across multiple genera, yet no one in their right mind would ever call each group just one singular species. The claim of fertility being the deciding factor on species separation is invalid and hasn't been used as a reliable singular factor in defining taxa for a long time, at best only an extra bit of evidence of lengthened separation; the two species here (they are not at all varieties, or even subspecies) are separated by differing sizes, colorations, structure of the tentacles, growth habits, reduced fertility in the hybrids (which does actually play against the "interfertile" claim), stipule structure, range and some ecological factors...all traits that would have seen them immediately separated if they were more similar to most sundews than they are. The only thing really joining them is that they're both North American and have filiform leaves, same situation basically as the case with D. graomogolensis and spiralis in Brazil yet I almost never hear anyone arguing that they're just one taxon.
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    Rat Snakes; fascinating. Schnellís book gives some really excellent info on the two varieties. If you think you know something he may have missed, please tell us. Especially neat, Schnell predicted an all green form of var. filiformis might be discovered which would set to rest species tracyi. This has come to pass. Anyway, I suppose the bottom line here is that tracyi has not been officially described as a species.

  8. #240
    hcarlton's Avatar
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    D. tracyi was described as a species before it was described as a variant of filiformis (early 1900's, Macfarlane), ergo there's nothing missing to accept it as such. Anthocyanin-free forms of both species are known as are now more than one unique flower color variants and of course the locality-separate variation of filiformis in Florida which is the only place the two taxa interact (and much as with most Sarracenia gene flow between the two is fairly low, signifying reproductive barriers of some form), signaling there's been time enough for filiformis alone to diverge significantly within its own populations but yet still retains enough shared traits across them all to remain cohesive, and that are different from those of tracyi to tell they've been separate taxa for a very significant amount of time.
    Everything has a reason, whether big or small. Never underestimate the power of what is or is not.
    There is far more to everything than meets the eye.
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