- low spring-blooming annual usually < 6 inches tall
- milky sap
- leaves alternate, slender, the margins toothless
- flowers tiny, green, in axils of upper leaves
- involucral glands with "horns"
- seeds with one pit on each face
- endemic to Texas
- scattered across South Texas; records from 15-20 counties
- all kinds of habitats
- simply overlooked?
