All Species in Gratiola
- Boggs Lake Hedgehyssop (Gratiola heterosepala)
- Bractless Hedgehyssop (Gratiola ebracteata)
- Branched Hedgehyssop (Gratiola ramosa)
- Clammy Hedgehyssop (Gratiola neglecta)
- Florida Hedgehyssop (Gratiola floridana)
- Golden Hedgehyssop (Gratiola lutea)
- Granite Hedgehyssop (Gratiola graniticola)
- Limestone Hedgehyssop (Gratiola quartermaniae)
- Little Amphianthus (Gratiola amphiantha)
- Rough Hedgehyssop (Gratiola hispida)
- Roundfruit Hedgehyssop (Gratiola virginiana)
- Shaggy Hedgehyssop (Gratiola pilosa)
- Short's Hedgehyssop (Gratiola viscidula)
- Yellow Hedgehyssop (Gratiola torreyi)