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Thread: Question about colorless tentacle dews

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    Californian in DC DrWurm's Avatar
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    Question about colorless tentacle dews

    So, we've all seen sundew varieties where the individual tentacles hold no color. Today, I took some photos of my Drosera indica and posted them to flickr (I made a separate thread showcasing the photos). One observant flickrite drew my attention to something on this photo: http://www.flickr.com/photos/drwurm/3498980264/

    "Wow..are those little brown things seeds or something?"

    I answered as best I could, but I'm still puzzled. So my question is, do the glands of colorless tentacled drosera change color when feeding?

    Jason

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    Rocketcaver's Avatar
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    Just an educated guess, but I would say enzyme concentration at the glands, possibly coupled with liquefied bug guts.

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    Hello, I must be going... Not a Number's Avatar
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    The color anthocyanin changes with pH so it is possible the digestive enzymes could affect the color of the glands. The plant may not be anthocyanin free even though the tentacles appear colorless.

    On my Drosera capensis "white" I've never noticed any color changes while the plant was feeding on prey.

    On my Drosera regia the dew droplets will get infused with red if there is anything to digest.
    Grand Hotel... always the same. People come, people go. Nothing ever happens.

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    CPlantaholic's Avatar
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    I did notice that on my D. capensis "red" (on a plant that was greener) that when I fed it, the portions of the leaf I fed had red blotches on them. The tentacles also changed from bright red to a dark maroon until it was done digesting.
    Visit The Sundew Grow Guides: http://www.growsundews.com
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