It's certainly a flax. You say 'down the road' as if this might be in a location where people have been active rather than a really wild place. Could it possibly be a stray plant of common flax, Linum usitatissimum, which is a crop grown in Texas according a quick Google. Just a thought.

It looks like a crucifer to me but really need a close up of the flowers. Check the link below. Here is a link that might be useful: Brassiaceae of the southwest

Second one looks like that invasive Ranunculus ficaria plant. Here is a link that might be useful: Link to details on Ranunculus ficaria

The folks on the "Name That Plant" forum helped me identify all of them very quickly. For reference, they are: Crimson Clover (Trifolium incarnatum) - first 2 pics Blue-Eyed Grass (Sisyrinchium sp.) - 3rd Nuttallanthus sp. (probably texanus) - 4th Verbena sp. (probably V. canadensis) - 5th