It sure is a pretty tree and the leaves look very familiar; it kind of remind me of Rhus but I'm just not sure and will look forward to hearing what it turns out to be.
Well, I guess Winged Sumac isn't right because the flowers on your plant appear to be white and the winged sumac has yellow blooms but the Prairie Flameleaf Sumac (Rhus lanceolata) looks to have white blooms. Here's a couple more links with photos:
I thought of Fraxinus too and F. pennsylvanicus grows in Texas but I couldn't tell from photos that I viewed. There are a few Ash trees that grow in Texas but I didn't find F. ornus listed anywhere. http://texastreeplanting.tamu....
Name: Leslieray Hurlburt Sacramento California (Zone 9b)
Tree of Heaven (Ailanthus altissima) is what it reminds me of. Its very invasive here in all of zone nine. Grows very quickly. They have a rather unpleasant odor when cut. Very messy several times a year. Looks great but....I hope my guess is wrong.
Hamilton Square Garden, Historic City Cemetery, Sacramento California.
Good eye Leslieray! I hadn't even thought of Tree of Heaven (Ailanthus altissima) and I think you may have nailed it and although it's very pretty, it is indeed a very invasive tree.
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