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350 Views 2 Replies Last post: Jun 6, 2014 8:16 AM by MikeHardman RSS
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Jun 3, 2014 9:52 AM

What species of elm is this?

Hi, I am having trouble identifying the species of this elm. I think it must be Ulmus minor but find it hard to identify any potential subspecies or find out what the difference is with ulmus laevis. I hope someone can help me. Thanks!

tree 2.jpgtree 3.jpgtree 4.jpgtree 5.jpg

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      Jun 6, 2014 8:16 AM (in response to joljols)
      Re: What species of elm is this?

      It is not U. laevis - the leaf of that species has a much more unequal base (three veins more on one side).

       

      Note: when considering U. glabra, the British form has leaves of a different shape to the continental form. The British form has leaves much more similar to those of U. procera.

      I don't think it is U. glabra; there are not enough vein-pairs in the leaves (should be about 17).

      On that basis, U. procera fits better (10-12 vein-pairs).


      Based on the photos and info to-date, your plant seems like Uu. procera or minor.

       

      We might be able to rule out U. minor (U. carpinifolia in many works until fairly recently)...

      "A common characteristic is the presence of minute black glands along the leaf veins, detectable with the aid of a magnifying glass" (http://en.wikipedia.org/wiki/Ulmus_minor)

      Please check that out.


      We could really do with more info, since eg. the leaf buds of U. minor are dark red, and those of U. procera are dark brown; and the stigmas of the flowers in U. minor are white.

       

      And there are several forms/varieties/cultivars of these species, just to add to the difficulty of identification.

       

      Mike

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