This spreading and much-branched smooth shrub looks very much like a Hypericum but is not related. It is actually related to Crepe Myrtle! The axillary flowers are yellow and followed by a dry capsule. This plant is said to have medicinal and mildly narcotic properties. It grows well in ordinary garden soil in sunny sites with adequate moisture. Native primarly south of the U.S. but range extends into southern Texas.
USDA Hardiness Zone 8-10