I find this wildflower along canyons in the Edwards Plateau. The main stem is covered with very small hairs. Simple, entire, leaves which are somewhere between lanceolate & elongated cordate are alternate, rotating around the stem. The leaves have a prominent midrib extending the length of the leaf. The leaves are also covered with tiny hairs. In some photos, these leaves look possibly toothed. Toward the distal end of the stem, small, delicate stems extend from the main stem. These smaller stems branch & have a small white flower on the end of each stem. The flowers have 5 white petals.