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#1
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Another way (perhaps the best way) of telling whether an elm is UlmusThomasii or not
Let me describe the problem first, so you can appreciate why I am
looking for a better way of telling apart Rock Elm from other elm. A few years back I was lucky to find some Rock Elm seeds, only that I was not expert enough to definitely know whether the seeds were really Rock Elm and not American elm or Siberian elm. And in the seedling flat, some of the seeds got mixed up where some American elm were mixed with the few Rock Elm seeds. So then my problem became, after the seedlings sprouted and began growing into tree saplings is whether the sapling is truly a Rock Elm or whether a American Elm or Siberian Elm. Well, after a sapling grows to a height, if it is Siberian is pretty easy to tell since the leaves are so much smaller than either Rock Elm or American Elm. The trouble is distinguishing between Rock Elm and American Elm. So I think I have found a new way of distinguishing that maybe superior to all the other ways. It is the thickness of the leaf. Rock Elm leaves are at least 2X thicker than the same size of leaf of a American Elm. Rock Elm leaves feel like cardboard compared to American Elm as the thickness of paper. So I think this test-- compare the leaf thickness is perhaps the single best test. Archimedes Plutonium www.iw.net/~a_plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
#2
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density weight of Rock Elm versus American Elm leaf Another way(perhaps the best way) of telling whether an elm is Ulmus Thomasii or not
wrote: Let me describe the problem first, so you can appreciate why I am looking for a better way of telling apart Rock Elm from other elm. A few years back I was lucky to find some Rock Elm seeds, only that I was not expert enough to definitely know whether the seeds were really Rock Elm and not American elm or Siberian elm. And in the seedling flat, some of the seeds got mixed up where some American elm were mixed with the few Rock Elm seeds. So then my problem became, after the seedlings sprouted and began growing into tree saplings is whether the sapling is truly a Rock Elm or whether a American Elm or Siberian Elm. Well, after a sapling grows to a height, if it is Siberian is pretty easy to tell since the leaves are so much smaller than either Rock Elm or American Elm. The trouble is distinguishing between Rock Elm and American Elm. So I think I have found a new way of distinguishing that maybe superior to all the other ways. It is the thickness of the leaf. Rock Elm leaves are at least 2X thicker than the same size of leaf of a American Elm. Rock Elm leaves feel like cardboard compared to American Elm as the thickness of paper. So I think this test-- compare the leaf thickness is perhaps the single best test. Now I am going to try a density weight test in the next several days. Where I get a Rock Elm leaf that is the same size as a American Elm leaf and weigh the two. What I hope to find is a sure fire way of telling the two species apart. I believe the weight density of Rock Elm is about 2X greater than American Elm. So that if in the future, I bump into a elm tree. And by simply feeling the leaf, would be able to say which of those elm it is. Now going further, to generalize, I wonder if I hit on a key test to differentiate two species that are close together. I have a tough time of telling the ashes apart, whether green-ash or white-ash. So I wonder if the density weight of leaves is a sure fire way. My scale may not go down far enough for a leaf, so I may have to use a relative weight scale of balancing beam with one leaf on one end and the other the other end. Archimedes Plutonium www.iw.net/~a_plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
#3
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telling apart Rock Elm from American Elm; red pigment in new leaves;Zelkova for Rock Elm
Nay, still having alot of trouble in immediately identifying Rock Elm
saplings from American Elm. I wish it was as easy as Siberian elm where the small leaves are a sure give away. I recently found a Rock Elm whose leaves were "not dense and not thick" and I found a American Elm whose leaves were thick and dense and hard to tell apart from Rock Elm. So I need something better. Perhaps it is the reddish pigment in the new leaves that can distinguish Rock Elm. I notice that my Rock Elm all have a reddish pigment in their newly formed leaves. The seed case of Rock Elm is distinctive from American Elm and perhaps the best clue of all is to see the winged bark. But on these very young saplings it is not yet time for winged bark to appear. Also I question the rate of growth of American versus Rock elm. Rock elm is supposed to be a slower grower, but whether that pertains to saplings is doubtful since my confirmed Rock Elm saplings seem to grow almost as fast as American elm. I sure would like to have a sure-fire way of differentiation because soon I am going to start to graft and I prefer to not waste time on a sapling that may or may not be Rock Elm. Is there a consensus on the most reliable and easiest form of graft? And is it advisable to graft in the middle of summer? I will use Siberian elm as rootstock that is already growing in existing places. I would like to simply make one cut of the Rock Elm and one cut on the rootstock and then use duct tape to bind around the bark interface and hold the stem upright by secure attachment to a metal rod and chicken wired as added support from wind. Or is bud graft the only way to go? Can grafting be done on a old mature tree that is cut to a stump? I would think it be the preferred rootstock since so much energy from the roots would go to any stems such as a graft stem. So I wonder if red pigment in new leaves of Rock Elm is a reliable indicator that it is Rock Elm? Also, recently I had a pleasure of learning of a new species Zelkova (spelling) Japanese Elm and that it is recent to Dutch Elm disease. So I wonder, is Zelkova a possible rootstock for Rock Elm? Archimedes Plutonium www.iw.net/~a_plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
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