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Joined: Apr 2002
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Lunker
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Pat - I passed through Palestine last week on a trip to meet up with Bob and his guys in N TX. I would've detoured through Oakwood to view this particular plant since it is quite new to me.
I sent your photos to Dr. Sink @ TAMU for further assessment. His response ("appears to be Hygrophila") mimics mine, but he suggested rolling the base of a stem between your fingers. The sensation of a "squarish stem" would likely confirm Hygrophila (i.e., the squared-stem might be felt, but not necessarily visible).
Considering that East India Hygrophila is an exotic species, it generally doesn't just "appear" somewhere without human-assistance. So, back to the previous question: To your knowledge, has anyone had the opportunity to release aquarium-plants into your pond? That action would pose the most likely route of introduction - IF it is indeed EIH.
Possibly jumping the gun on speculation since its ID hasn't been confirmed. Do the finger-roll suggestion and report back.

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Kelly
I will roll some in the morning and get back to you. Would it be possible to bring some in for a positive id? Have weed will travel..

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Roll some, in the morning??? Did this conversation take a tangent? smile

Actually, I'd like to get some samples of the plant - but certainly don't make such a drive for that purpose. I'll PM my address to you.
If you're able to collect two or three 12" terminal-stems of the stuff and put them in a zip-lock baggie (here we go again...) and mail them my way, I'd be much appreciative.
Place a moistened paper-towel in the zip-lock - and try to evacuate as much air from the bag as possible before sealing it. A padded envelope generally works best for mailing-purposes.
Option B is UPS, but may be more haSSle$.

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We have a chamber vac and will evacuate a little air and seal it

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Originally Posted By: Pat Williamson
Kelly
I will roll some in the morning and get back to you. Would it be possible to bring some in for a positive id? Have weed will travel..

Pat be careful, Might be some Narcs around here smile

Woodstock


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According to TAMU there is only one treatment - Clipper. But, I'm speaking out of turn because it hasn't been 100% ID'd yet. Kelly knows more than I do!! If he says to use something else, I sure won't disagree.


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We gonna pull some next Monday and send to Kelly for a positive id. Them we will know for sure

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Pat - I thought I'd give you an update on your mystery plant...
I received your plant specimens in good condition and promptly took these PHOTOS.
Said photos were submitted to multiple aquatic specialists (PhDs) at major universities spanning from TX to FL.
So far, differing/conflicting opinions were received on the plant's ID; ranging from Ludwigia spp (one of the primrose species) to Hygrophila spp (some species are native, one is exotic).
Several key characteristics seem to have them puzzled (as was I); namely the variability of leaf-shapes, leaf arrangement on the stem, coloration patterns and the plant's mostly submerged growth-habit. Some of these traits point to Ludwigia, and some to Hygrophila. It might be possible that your plant is a hybrid of one or the other, and maybe an escapee of the aquarium industry.
I'm currently rehabbing some of your plant-samples to send to a contact at the U of FL Center for Aquatic and Invasive Plants for further assessment.
I'll make you aware of any further determinations as they become available.

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Kelly,

I'm curious, can they do DNA testing on plants and is there a database to compare to?


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Bill - a valid question, but I have no idea if a DNA database exists, or if "they" would go to such extremes unless the mystery-plant was posing "invasive" characteristics or problems.

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Kelly thanks for looking into this "unique " plant for me. A neighbor a mile away has the same plant and it seems to grow in 3' or less water also . Maybe we will get lucky and it won't be so bad..... Here's hoping

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Kelly, do the different species that were thought to be ID'd have different control options? Or will one control option be sufficient for all the suspected ID's?


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Originally Posted By: stickem'
Pat W. asked me to post the pics below for identification.




Kelly here they are

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Pat, your plant samples have been growing in a bucket on my patio all summer.
HERE are photos of your sample specimens taken when they first arrived.
The sample plants' growth-pattern "morphed" shortly after I began their rehab in a bucket (as shown HERE).
Oddly enough, the recuperating plants never returned to the growth-pattern displayed in the original photos.
I basically think it's one of the many species of primrose, but not one that I recall seeing before. As you'll note in the photos, there were some Lepidoptera worms that seemed to really enjoy munching on this plant.
Lastly, some bladderwort seeds evidently hitched a ride with your sample-submission.

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Oh well that's not to bad .... Now I got blue green algae and not sure what if anything to do about it

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Pat,
With all this rain over the last few weeks, have you seen a decrease in your BG algae?


Brian

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Not that I can tell although that's what I was hoping for. It hasn't gotten any worse .
Also was hoping that the tilapias would change the situation

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