Triosteum angustifolium
| Small horse gentian; Yellow-flowered horse gentian |
Triosteum aurantiacum
| Early horse gentian |
Triosteum aurantiacum var. aurantiacum
| Early horse gentian |
Triosteum aurantiacum var. glaucescens
| Early horse gentian |
Triosteum aurantiacum var. illinoense
| Early horse gentian |
Triosteum perfoliatum
| Late horse gentian; Clasping-leaved horse-gentian |