All Species in Bartonia
- Bartonia paniculata subsp. iodandra (Bartonia paniculata subsp. iodandra)
- Bartonia paniculata subsp. paniculata (Bartonia paniculata subsp. paniculata)
- Texas Screwstem (Bartonia paniculata subsp. texana)
- Twining Screwstem (Bartonia paniculata)
- White Screwstem (Bartonia verna)
- Yellow Screwstem (Bartonia virginica)