Two separate collections of petrified wood from near Fall City, Texas, and Leesville, Louisiana, respectively, yielded stumps with anomalous secondary growth. Specifically, these woods appear to have foraminate included phloem. Individual bundles are round to oval and slightly tangentially elongated. Vessels are solitary, in radial pairs and oblique multiples; they are not restricted to a position subtending the bundles. Perforation plates are exclusively solitary; intervascular pits are alternate and small, pits to ray parenchyma are similar. Rays are uniseriate and short. The shape and distribution of the bundles and characteristics of the rays and vessel elements indicate these woods are most similar to the woods of the Nyctaginaceae, although they differ from samples of extant Nyctaginaceae examined to date.