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Thread: South African Droserae

  1. #49

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    I use fine sand(the only thing I can find at Home Depot) for my plants, but I also add perlite to keep the soil from compacting too much.

  2. #50

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    Try the swimming pool suppliers, every one I have ever asked carries the coarser silica sand.
    "Grow More, Share More"

  3. #51
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    Unhappy

    Hi All,

    What are the exact differences in leaf/stem structure between the D. glabripes and D. collinsiae?

    I have been growing the following drosera for a while. However, I am unsure as to it's ID. Most likely it is either a D. glabripes or D. collinsiae. I find the petiole to be to wide for the plant to be a D. collinsiae, However it doesn't seem to perfectly fit in the D. glabripes category either. Can anyone tell me for sure?


    [img]http://home.**********.com/noah/images/drosera2.JPG[/img]

    [img]http://home.**********.com/noah/images/drosera1.JPG[/img]

    thanks,

    noah




  4. #52

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    Hi Noah,

    I believe the photo I posted of D. glabripes is the true species. Obermeyer in his key states the stipules are "large, 1 cm, orange brown, entire at the base, cleft above into 5-7 long bristles" which appears to conform to what I have as this species.

    The photo you show looks a lot like D. madagascariensis in a juvenille form.

    Drosera glabripes has a caulescent form, often decumbent with only the top leaves active, the remainder of the elongated stem clothed with the old dry petioles. In this sense it is somewhat like D. madagascariensis. It differs from D. collinsiae in the presence of strigose hairs beneath the lamina, attached laterally to one side, parallel to the epidermis.

    D. collinsiae is acaulescent, although with upright held petioles and lamina reminiscent of D. nidiformis in form. The lamina are glabarous beneath. The lamina are more broad than D. nidiformis. Your photo does not conform to collinsiae as I know it. This is a very variable species, but your lamina are too spathulate to conform to D. collinisiae.

    If your plants begin to ascend, and show the long divided stipules you have D. glabripes. If the stem elongates and these long stipules are not evident, you probably have D. madagascariensis. The color reminds me of the "Botswana" material that you once sent to me.



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  5. #53

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    Hi,

    Here are two photos of what i have as Drosera collinsiae. I believe these are the true ones.


    Drosera collinsiae

    Noah, I don't think your picture shows a Drosera collinsiae.

    Christian

  6. #54

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    I agree w/ William that it looks like a D. madagarscariensis.

    Here's a picture of my "Botswana" plants back in Sep 2002.


  7. #55
    Moderator Joseph Clemens's Avatar
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    Here is a photo of what I am growing as Drosera collinsiae.

    Joseph Clemens
    Tucson, Arizona, U S A

  8. #56

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    Hi,

    I'm not going to comment on the most current discussion about collinsiae/glabripes, but I just want to comment an earlier post by UtricSeb regarding his D. burkeana. It is possible that you have been PM'd by someone already, but I still want to mention that the plant on your photo does not look like a D. burkeana. Unfortunately mislabeling seem to be rampant when it comes to drosera, and especially the rosetted ones.

    Regards,

    Christer

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