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Rhyncostylis gigantea (arrived with purple circles)

This is a discussion on Rhyncostylis gigantea (arrived with purple circles) within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; The red around the damage is the plants way of protecting it . That is ...

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  1. #11
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    The red around the damage is the plants way of protecting it . That is not the type of red caused by bloom color or sun .Also there is no way an inspector could look at a plant and say it does not have a virus, most of the inspections are for bugs .
    Gin

  2. #12
    Alicia is offline Junior Member
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    Man I really appreciate all this info. Perhaps this orchid will be the first to live outdoors, at least till I decide what to do with it.

    It is in quarenteen but I am expecting delivery of 3 more orchids and I do not wish to risk them. What are the chances of viruses crossing from one genus to another?

    thanks again guys

  3. #13
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    As long as the one with the problem and the new ones are kept isolated from one another it should be fine . Cross contamination is how it is transmitted , using cutting tools , finger nails to pinch off a wilted bloom , reusing pots that one has been in without sterilizing it . I have also heard insects can ? sap from the infected one comming in contact with a wound on another plant . If newly imported it might be from a fungicide used on it during import ? But with one root In my Ho. it is not worth the hassle , I would take the refund . Gin

  4. #14
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    Time to give spotty a milk bath according to your link re:virus transmition.

    Hey it's worth a shot. Then into a terrarium for isolation it will go.
    Thanks again

  5. #15
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    I still think it is normal colouration for Rhy type species, I have seen many of them display similar markings. I was in the same boat when I first grow mine many years ago and I took it to the society meeting and was told by different experiece growers that it is normal for Rhynchostylis. I was afraid it was virus as well..... mine display similar markings every summer when I grow them outside and the marking subside/disappear during winter when light level is much less, I guess that is another validation too.
    Anyways, just a thought before everyone went into the virus panic mode......lol

  6. #16
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    There is no way to know if it is a virus or not , with out testing , my plant gets a blush to it , but does not have the pitting , color pattern,that is what I am referring to in my above post .Not a faint blush . Gin

  7. #17
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    Thought I'd jump in here..... Alicia, you seem to be satisfied at this point and I don't want to beat a dead horse, but....

    Rhyncos will just do that--it's how they grow. If they're given enough light to bloom well, they'll develop a purple cast. Under strong light, they will also develop tiny purple spots, and tiny rings surrounding even the most trivial leaf damage. It looks like yours may have been visited by a herd of critters at some point while it was growing out in the open; they tasted your plant, didn't like the flavor much, and moved on. The plant then developed tiny purple rings around each place where the leaf was pierced.

    Here's one of our Rhyncos; notice the similar purple spotting in and around the crown:

    Name:  rhynchoPurpleOverview.jpg
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    Just to test things out, I took a needle and pierced the skin of the leaf in a few places:

    Name:  rhynchoPurpleNeedle.jpg
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    Here's the pierced leaf, poked in 6 places, with a circle drawn on the plant around the area. The arrows point to two of the holes:

    Name:  rhynchoPurplePierce.jpg
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    In a few days, a week, as soon as something changes, I'll take a pic and post it here, and we'll see if any purple rings have developed around each piercing.

    Your plant may very well be virused; any plant may be. But if it is, it's a completely seperate issue you will only be able to resolve by testing, and it has nothing to do with those purple marks you're seeing on the leaves, so you can rest easy about that. Also, Rhyncos don't grow a haze of roots like many Vandas or other kinds of orchids can. They grow a few really thick and fleshy ones; that's about it. Don't expect a big tangle...

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    Wow I am glad I found this board. Glad to hear this is a normal phenom. I have it in the terarium, and washed the leaves incase it was a pesticide reaction.


    LJA - Talk about going above and beyond. Hope your Rhyncos test subject will forgive me. ;D

    Thanks so much guys.

  9. #19
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    Alicia, not a problem. I actually really like checking things like this out. Too much "not necessarily true" stuff, I think, is said about these plants because someone heard something from someone else who heard it from their neighbor's sister so they repeat it because it sounds plausible enough, though it may turn out to be totally wrong. A lot of orchid myths are propagated this way.

    So it may turn out that what I've said about the purple rings is totally wrong, even though it "looks" to me like that's what's going on. But if it *is* totally wrong, at least after this little experiment, we'll know a little more than we did before and we can go from there!

  10. #20
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    You know... I have a Phal Silbergrube that has similar purpleish ring-like marks. I had never had a plant with these on them. Hmm, I'll post a picture...
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