| Thereianthus | |
|---|---|
| Thereianthus spicatus | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Iridaceae |
| Subfamily: | Crocoideae |
| Tribe: | Watsonieae |
| Genus: | Thereianthus G.L. Lewis |
| Type species | |
| Thereianthus spicatus (L.) G.J. Lewis | |
Thereianthus is a genus of flowering plants in the family Iridaceae, first described as a genus in 1941. The entire genus is endemic to Cape Province in South Africa.
The genus name is derived from the Greek words thereios, meaning "summer", and anthos, meaning "flower".