Structure Name

Discussion in 'Plants: Science and Cultivation' started by davallia, Jul 30, 2011.

  1. davallia

    davallia Active Member

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    Phyllodes, cladophylls, cladode? Am trying to ID a tree, and need to know the name of the structures on the stem between the leaves (attached pic). Thanks in advance for any assistance. The _Sinoj_ is just the abbreviation for the bed name at RBG.
     

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  2. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    I would just call this a "winged" branch... or is this a compound leaf?
     
  3. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    It's a compound leaf with a winged rachis.

    Similar example: Rhus copallinum.
     
  4. Junglekeeper

    Junglekeeper Esteemed Contributor 10 Years

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    I think the OP is asking for the technical term for the wings.
     
  5. togata57

    togata57 Contributor 10 Years

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    Winged petiole.
     
  6. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    It'll be as Michael F says, as the rachis is the main stem of a compound leaf.
     
  7. togata57

    togata57 Contributor 10 Years

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    How about both rachis and petiole winged?
     
  8. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    Can't see the petiole in the photograph, unfortunately. Certainly possible, though.
     
  9. togata57

    togata57 Contributor 10 Years

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    What is the name of the plant pictured in the original post?
     
  10. davallia

    davallia Active Member

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    I'm pretty sure this tree is Zanthoxylum esquirolii. I've not seen these structures mentioned in any description, however, or seen them in any other pic. The leaf is compound. Have attached pic of the trunk. The red leaves in this pic belong to a shrub next to this tree.
     

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  11. Lysichiton

    Lysichiton Active Member

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    Dredging things up from my botanical past, I agree with Michael F.
    "It's a compound leaf with a winged rachis."

    One could say ..an ALATE rachis. I am not sure that these "wings" are separately defined or named "structures" They appear as if they could merely be outgrowths originating from the cambium of the rachis.

    Aren't there some Vetches with leaves that have similar "winged" rachi?
     
  12. davallia

    davallia Active Member

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    Thank you everyone for your thoughts. Winged rachis seems to be the answer.
     

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