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ulmus thomasii; identification
Of course the best identification is the corky bark. But there are
many rock-elm that have no corky bark and these are the troublesome cases. Now I wonder if a genome of the rock-elm and american-elm have been completed? For I would like to know how many gene differences there are between the two. Since some rock-elm are almost indistinguishable from american elm I suspect there is perhaps no clearcut boundary between the species. Maybe they were never distinct species but rather hybrids of one species. Now there is one new feature I am seeing on my assured rock-elm. The only way I know for sure if it is rock-elm is to see corky bark. And I notice that on my assured rock-elm that the new leaves have a bright red tint. And this bright red tint which goes away as the leaf becomes mature occurs only on the rock-elm. So I wonder if this is a distinct feature of rock-elm in that new leaves can be seen to have a reddish tint, some bright red and very noticeable, others with a less red but still enough red. And that american elm has no red new leaves. It is not that I am having trouble with all rock-elm. Just those that have no corky bark. 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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