Unknown Plant

Discussion in 'Plants: Identification' started by ardchat19, Jul 1, 2006.

  1. ardchat19

    ardchat19 Member

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    Location:
    West Texas
    Can anyone please help me to identify this plant? It is about 5 feet tall and is continuing to grow. No flowers as of yet. It's leaves are similar to maple tree leafs, but I am quite sure this is not a sapling. But I am open to suggestions. Thank you for any help ya'll can offer. See pics for more details.
     

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  2. Ron B

    Ron B Paragon of Plants 10 Years

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    Try "giant ragweed".
     
  3. abgardeneer

    abgardeneer Active Member

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  4. KarinL

    KarinL Well-Known Member 10 Years

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    Heracleum?
     
  5. Ginger Blue

    Ginger Blue Active Member

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    Do you not have Giant Ragweed out west? Surprised at the different responses. This one's a well-known weed here. Too bad about the pollen, though, because it's actually quite a nice foliage plant. Gets VERY tall.
     
  6. KarinL

    KarinL Well-Known Member 10 Years

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    Yah, I should know better than to disagree with Ron.
     
  7. Takana_Hana

    Takana_Hana Active Member 10 Years

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    Location:
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    cant be rudbeckia... wat your talking about is sweet black eyed susan and the leaves never get that big!
     
  8. Ginger Blue

    Ginger Blue Active Member

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    Welllll.......that's not exactly true. Rudbeckia laciniata actually has leaves every bit as big as those of giant ragweed. I was just out at the farm and was thinking of this thread as I was comparing the two plants. The difference has to do with the texture and shape of the leaves, not the size of them.
     
  9. plantlady62

    plantlady62 Active Member

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    My Vote Is For Giant Ragweed
     
  10. abgardeneer

    abgardeneer Active Member

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    I am preparing to withdraw the suggestion that it might be Rudbeckia laciniata... not based on leaf size/texture/shape, however. From the little detailed description I can find on the internet, Rudbeckia laciniata is said to have alternate leaves, while the pictured plant has opposite leaves in all the leaf bunches where it can be clearly seen. So unless it is possible that R. laciniata may have opposite basal leaves, becoming alternate up the stem, it would appear not to be that. What say the experts?
     
  11. Ginger Blue

    Ginger Blue Active Member

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    If you've ever seen these two plants in person, there is no doubt of the correct ID.

    R. laciniata doesn't form a basal rosette.

    Ambrosia trifida
    Rudbeckia laciniata

    (BTW, abgardeneer, glad to see you over here!)
     
    Last edited: Jul 5, 2006
  12. abgardeneer

    abgardeneer Active Member

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    Okay... uncle.


    (PS Thank you for the welcome, Ginger Blue! I assume our paths must have crossed on GardenWeb at some time...)
     

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