This is the first atlas of the Texas flora ever and provides distributional information for about 6000 taxa of vascular plants native and naturalized in the state of Texas. The book is the result of 52 years of herbarium and fieldwork, beginning in 1948 at Sul Ross State University, Alpine, Texas by the senior author.

The book is organized into two volumes: Volume 1 covers dicots, while Volume 2 covers ferns, gymnosperms, and monocots. The book is a prime-source document of biological data and is most welcomed by botanists, taxonomists, conservationists, environmental consultants, researchers, as well as teachers, students, wildflower enthusiasts, and naturalists.