This and the other image you gave a link to both look like Juniperus Virginiana (easter red cedar) to me.

Many dislike them and consider them "invasive". I do like them, and don't consider them "invasive" as they are native. They are vigorous reproducers though, and often take over disturbed areas / roadsides, and often appear in pastures. The mature trees are nice, and the wood is also very nice and very aromatic.

It's an Ashe Juniper Juniperus ashei; a widespread native in Texas.

Resin

Here is a link that might be useful:

Ahh, that full sized photo was helpful. Though, J. Virginiana is also wide spread in east Texas. But seeing the full photo it's growth habit looks quite different.

I agree, it looks like J. ashei.

I think they're neat trees. Mature trees in mixed oak and juniper stands are Important habitat for the endangered yellow-cheeked warbler but most people hate them because the pollen is highly allergenic. Note that only male trees produce pollen (if you have the blue "berries", then it's a female)

There is some overlap in the distribution of J. ashei and J. virginiana (also J. pinchotii as you move west) and sometimes the trees can look really similar. Generally, the ashei scales (leaves) are chunkier and the overall shape of the trees are globular as apposed to the virginiana's pyrimidal (Christmas tree) shape. The best way to tell virgiana and ashei apart is the resin gland; ashei has a round gland, virginiana has an oval-shaped gland. The file I uploaded shows the position and approximate size and shape (red arrow, red circle) of the resin gland. I can't vouch for the photos, I'm only showing you position and relative size.

The other clue is that young trees and some new branches of virginiana can look like the upper left photo (pointy). You don't usually see that in ashei.

Looks like J. ashei to me also. The blue "berries" look bigger than those of J. virginia.