Texas Vascular Plant Checklist:  Loganiaceae
The Pinkroot Family
(Magnoliophyta, Magnoliopsida, Asteridae)

 Gelsemium
   sempervirens (L.) Ait. f. (carolina jessamine, poor man's rope, evenign trumpetflower, yellow jassamine)

 Mitreola
   petiolata (J.F. Gmel.) Torr. & Gray (lax hornpod)
   sessilifolia (J.F. Gmel.) G. Don (swamp hornpod)

 Spigelia
   hedyotidea A. DC. (prairie pinkroot)
   loganioides (Torr. & Gray ex Endl. & Fenzl) A. DC. (florida pinkroot)
   marilandica (L.) L. (woodland pinkroot, indian-pink)