I live in west texas (arrid desert, I think). this tree reminds me of a willow but does not weep. It is very whispy with any kind of wind, and I've never seen flowers on it. http://picasaweb.google.com/erniejess/Tree
Very hard to say for certain; there's numerous species of willow and hundreds of hybrids, and identifying them isn't easy. This one looks to have very fast growth, suggesting it is one of the hybrids selected for shelterbelt planting. One that looks quite similar (and is widely sold commercially) is the 'Austree' hybrid.
Globe Willow, Salix matsudana x alba `Navajo' perhaps? http://www.coopext.colostate.edu/TRA/PLANTS/globe.html HTH Chris
I agree it looks like a globe willow. At any rate you can probably get one going from cuttings of the tree shown or others in the area.
OMG....that looks like the one. I've been frantically searching to see what kind of tree this is. I really want one for my back yard. Now I just have to figure out where to get one and how to take care of it. Saltcedar...thanks for the link...its pretty informational.
Not a good one for planting close to buildings, service lines, etc., it has very invasive roots. In Britain, the current advice is not to plant large-growing willows like this within 40m of foundations. If you still want one and have space for it, it is very easy to root from cuttings. Just cut a branch about a metre long after the leaves have fallen in autumn, and push it for 2/3 or 3/4 of its length into the ground where you want it to grow. They prefer moist to wet soils, e.g. beside ponds.