A lot of these are the same as suggestions above 1) Maianthemum canadense, Canada Mayflower, probably. 2) Wild Lettuce, maybe 3) Cut Leaved Toothwort, Cardamine concatenata 4) Jewelweed seedlings, Impatiens capensis or pallida 5) Lonicera something, some vining honeysuckle 6) Maybe Teasel 7) Veronica spp 8) Chickweed, maybe Stellaria graminea 9) ?Wild Cucumber Vine? 10)? Waterleaf, Hydrophyllum, need to see the leaves Vicia cracca, Cow Vetch, or something similar. Geranium maculatum, Wild Geranium Buttercups, Ranunculus spp The leaf and flower aren't from the same plant. The leaf is some kind of Potentilla, I think, and the flower is a Hawkweed, probably King Devil, Hieraciujm caespitosum because of the black hairs. Another Geranium, maybe? Wild blue Phlox, Phlox divaricata A sedge, maybe Carex intumescens WW

Weakley's key says that main or middle stem leaves average 3x as long as wide, and have long-tapered bases for .var lanceolata. Main or middle stem leaves average 2x as long as wide, with broadly rounded bases for var. vulgaris. We see more of the upper leaves in your photo. The lower ones do appear shorter, broader, and have more rounded bases. There's even a little understood, third variant (.var hispida) that has stems, petioles, and sometimes lower leaf surfaces densely villous-hispid. The same .var vulgaris parts are only sparingly, and not conspicuously, pilose. All of that said, your plant seems most like .var vulgaris to me.

The tubular flower with the swollen throat, purple stem, upright habit, and foliage shape tell me this is one of the Strybing forms of Salvia disjuncta. On the east coast, the Logee form of disjuncta is more common. Logee form is much more of a spreader, erect only when well established and growing robustly. It has fruity scented foliage and the stem is not so pigmented. Both are really late bloomers outside of California and maybe Florida

The three Sandmats in TX that look similar (glabrous, and relatively dense clusters on long peduncles), are nutans, hyssopifolia, and hypericifolia. Although TX is a bit ahead of my south-central Arkansas location, we see hyssopifolia and hypericifolia in June. C. nutans doesn't show up until July. Nutans' leaves are also more toothed, the plant is often upright, the fruits are typically green with red highlights, and the flowers are single, or occurring in small clusters. Your plant probably isn't C. nutans. C. hypericifolia is difficult, because there are cultivars like Diamond Frost, as mentioned above. Those tend to have flowers with long, white petals. But the wild hypericifolia looks much like the plant in your photo. It has very dense clusters of flowers, and is often reclining in form. C. hyssopifolia also had dense clusters, and flowers about the same time as hypericifolia. That one often has stems rising at 45+ degrees. The ID is most likely hypericifolia or hyssopifolia. They can be identified by minor differences in fruit, etc., but are difficult to determine from photos. If your plant is large (similar in size to nutans) and relatively upright, my best guess is hyssopifolia.