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Can you identify this plant


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#1 johnnymax

johnnymax
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  • Buna, Texas

Posted 03 July 2019 - 03:11 PM

I collected these floating on Lake Charles Louisiana. It was after a heavy rain, so I assume they washed down from the bayous.

There are two different types of floating plants.

The larger ones are the plants I am asking about.

Can anyone identify them?

 

Attached File  2019-06-30 14.32.53.jpg   156.59KB   1 downloads


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#2 Matt DeLaVega

Matt DeLaVega
  • Forum Staff
  • Ohio

Posted 03 July 2019 - 09:08 PM

Frogbit I think.


The member formerly known as Skipjack


#3 mattknepley

mattknepley
  • NANFA Member
  • Smack-dab between the Savannah and the Saluda.

Posted 04 July 2019 - 08:31 AM

DLV could be right on this one.  Kinda looks like it to me, but that's all I'm really brave enough to say.  Here's a link to a brief Frogbit thread from a year or so ago.  http://forum.nanfa.o...ers/?hl=frogbit


Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#4 WheelsOC

WheelsOC
  • NANFA Member

Posted 04 July 2019 - 11:33 AM

Could be invasive frogbit, or its native cousin spongeplant.

 

Here are some photos of each for diagnostic and/or entertainment purposes only:

 

Limnobium laevigata (Frogbit)

 

Limnobium_laevigata_-_Floating_Plant_lar

 

limlae4.jpg

 

 

 

Limnobium spongia (Spongeplant)

 

limspo07.jpg

 

 

 

L. spongia usually has that rough, rusty-colored spongy texture under the leaves, or at least some reddish brown on the underside of leaves and stems. L. laevigata does not.

 

Limnobium.07164.JPG

 

limnobium-spongia-leaves.jpg

 

Either one makes an excellent float plant for ponds or larger tanks. In fact, if it's spongia you might want to keep and propagate some for trade in the hobby. Frogbit is more popular, but there's a niche for native NA plants.



#5 mattknepley

mattknepley
  • NANFA Member
  • Smack-dab between the Savannah and the Saluda.

Posted 04 July 2019 - 01:08 PM

Nice, Wheels.  That's a great comparison/contrast post for telling these two apart.  Happily, my stuff was native.  It grew like gangbusters in a dimly lit aquarium.  Forget what I did to make it crash.  Next time I come across it I do intend to scoop some up!


Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#6 gerald

gerald
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  • Wake Forest, North Carolina

Posted 07 July 2019 - 12:01 PM

I dont think Johnny's plant is frogbit (neither the US native nor S.Amer one).  Looks like it has a fold down the middle where water droplets collect; Limnobium doesn't do that.  Could it be giant Salvinia (fuzzy on top)?  I can't get a good sense of scale in Johnny's pic.  If the smaller plants are duckweed, then Salvinia would make sense.  You can also try this USDA aquatic plant key:  http://idtools.org/id/appw/index.php


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#7 mattknepley

mattknepley
  • NANFA Member
  • Smack-dab between the Savannah and the Saluda.

Posted 07 July 2019 - 08:33 PM

Good observation, Gerald.  I was actually thinking the smaller plants in the top photo looked like that Salvinia even I can't kill.  Forget which one.  Has a real neat top texture, like you said, but if you let it get too thick it casts a funky dimness in the tank...


Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#8 Matt DeLaVega

Matt DeLaVega
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  • Ohio

Posted 07 July 2019 - 10:22 PM

https://plants.ifas....lvinia-molesta/

 

That's it Gerald. Good call.


The member formerly known as Skipjack


#9 johnnymax

johnnymax
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  • Buna, Texas

Posted Today, 02:02 PM

https://plants.ifas....lvinia-molesta/

 

That's it Gerald. Good call.

 

That is defintely it!

Here is a blow up

Thanks

Attached Files


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#10 johnnymax

johnnymax
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  • Buna, Texas

Posted Today, 02:17 PM

Now that it has been identified as an invasive, I will destroy it.


"I work so I can buy things, give things & do things"





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