It's probably Stachytarpeta. I have two varieties of Veronica and this plant looks very different. My Veronica is starting to go to seed and this plant is just starting to bloom. Individual stems, multiple from each plant center, grow up to 2.5 feet tall with a single 'plume' that starts to blooms one tiny flower at a time along the stalk similar to liatris blooms. The leaves are round and scalloped. No, not a vine. Very stately. Thank you for your help.

Any chance you got a closer picture? DYCs are hard enough.

Yes, Palafoxia callosa (Spanish Needles) looks like a match!!! Thanks!!! BD

It's a Phemeranthus species. They are called Fame Flowers and Rock Pinks. They are all very similar, so I can't give a species ID. There are 19 species in NA, with 4 species occurring in Oklahoma. They are P. calcynus, P. confertiflorus, P. parviflorus and P. rugospermus.