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Help with plant identification please

Discussion in 'General Plant Topics' started by argnom, Aug 1, 2010.

  1. argnom

    argnom Guru Class Expert

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    Hi everybody,

    I just got this nice looking plant at my LFS, but, unfortunately, as it is the case quite often, the employee could not give me the name of the plant or if it is in fact a true aquatic plant. Some help would be welcomed. I suspect that it is not a true aquatic plants, the stems are rather "stiff" compared to the other aquatic plants that I have seen in the past.

    Thanks!
     
    #1 argnom, Aug 1, 2010
    Last edited by a moderator: Aug 1, 2010
  2. Biollante

    Biollante Lifetime Charter Member
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    Now Gerry Can Tell Us What It Really Is

    Hi,

    I will look it up later, but off the top I would say Ludwigia glandulosa or some such.

    Biollante
     
  3. Gerryd

    Gerryd Plant Guru Team
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    Hi,

    I will eat my hat if that is NOT a ludwigia...

    I think Bio is right on the money with his id..

    Please note that many of our stems we keep are bog plants and can do well under or out of the water....these WILL have stronger stems w/o water to support them..

    Looks a lot like this:

    http://www.aquahobby.com/garden/e_Ludwigia_glandulosa.php
     
    #3 Gerryd, Aug 1, 2010
    Last edited by a moderator: Aug 1, 2010
  4. argnom

    argnom Guru Class Expert

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    Thanks Biollante and Gerry! :D

    It's appreciated as always. So in fact, it is an aquatic plant. Yay!

    Hopefully the stems will stay stiff and grow strong. I put them in a place where there's quite a bit of current. Best case scenario, they will grow strong and stiff to fight against the current. It's the main reason why I got them. The other stems I tried were too weak to withstand the flow. These were almost woody, so I though I would give them a try.

    If they're like terrestrial plants, if there's current (wind in the case of terrestrial), they'll get stiff(er) and if there's no current (wind), they will not expand the energy to stiffen up and will grow all wimpy. I used to put fans in from of my young tomato plants so that the stems wouldn't break from the weight of the tomatoes before putting them outside. Hopefully, it will work.

    It would seem that plants are lazy like that sometimes...

    Have a good one and thanks again guys!
     
  5. Biollante

    Biollante Lifetime Charter Member
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    And I Will Buy Gerry A New Hat If He Has To Eat His

    Hi,

    Upon further review, the plant stands as called. ;)

    Ludwigia glandulosa, aka Cylindric Fruited Ludwigia, is a problem emergent, native to southern Illinois, Missouri, Texas and no doubt other places. I “found” some in Missouri a couple of years ago (if this turns out to be illegal I was misquoted, obviously taken out of context).

    It is definite swamp plant, easily will reach a foot (30 cm) underwater, it has been reported (mistakenly I believe) that it will only remain dark red or purple under high light, it appears (to me anyway) that the colors lighten (pale red to green) when insufficient nutrients are available. It is a nutrient hog, high nitrates, high phosphate and high iron.

    Ludwigia glandulosa will grow right up out of the tank if allowed (I vote for allowing) emergent it will easily grow to two feet (60 cm) and develop flowers that give it the Cylindric Fruited part of its name.

    Propagation is easy, once fully and properly rooted, by lateral shoots. I suspect propagation by seed would be fairly simple.

    This plant has a reputation for being difficult, I suspect it is more a matter of patience; it is a slow starter, needing time and space to form a good root structure. :)

    I also noticed that it seems to do somewhat better in the lower end of it's water temperature range 68-82 F (20-28 C). It seems to like varied photo periods, 14-16 hours in the summer to maybe 6-8 in the winter.

    Biollante
     
  6. Gerryd

    Gerryd Plant Guru Team
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  7. argnom

    argnom Guru Class Expert

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    Thanks you two (again). More info is always better than too little.

    Do you think "StimRoot" or other IBA (Indole-3-butyric acid) containing product could help? I've used IBA before on terrestrial plants with good results. Has anybody used it in the aquarium.

    ...and how would one use it? :confused:

    Ice cubes and plop them into the substrate?
    Just dose in the water column? * hopefully, the leaves won't start to grow roots :rolleyes: *
    Should IBA be used just "on site", where you want roots to grow?

    /Perhaps I should just start a new thread
     
  8. Ekrindul

    Ekrindul Guru Class Expert

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    I thought it was lobelia cardinalas based on the leaf shape being so oval, less pointed than ludwigia. I saw some at the LFS this weekend that was very purple like this, though it was a small plant and I couldn't see the stems well.
     
  9. argnom

    argnom Guru Class Expert

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    Good observation Ekrindul, but I'm pretty sure that it is in fact Ludwigia glandulosa. The veins on the leaves (that you cannot see really well because of the poor quality of the pictures I submitted) are quite different than Lobelia cardinalis.

    I have to admit that I would have like to get my hands on that one also. :p

    Cheers!
     
    #9 argnom, Aug 2, 2010
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  10. Ekrindul

    Ekrindul Guru Class Expert

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    Yeah, I considered picking up some Lobelia cardinalis when I saw it, but I think my tanks are too cluttered as it is.
     
  11. Biollante

    Biollante Lifetime Charter Member
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    Pretty, But Not Aqutic

    Hi,

    The Cardinal Flower, Lobelia cardinalis is a pretty plant, but it is not an aquatic plant. :gw

    The Cardinal Flower is pretty easy to collect, it has a wide range in North America (except upper NW).


    http://plants.usda.gov/java/profile?symbol=LOCA2


    :cool: Biollante
     
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