Cyrtanthus is a genus of perennial, herbaceous and bulbous plants in the family Amaryllidaceae, subfamily Amaryllidoideae.[2][3][4][5]
Cyrtanthus is the sole genus in the African tribe Cyrtantheae.
The placement of Cyrtantheae within subfamily Amaryllidoideae is shown in the following cladogram:
Tribe Amaryllideae
Tribe Cyrtantheae
Tribe Haemantheae
Tribe Calostemmateae
Tribe Lycorideae
Tribe Galantheae
Tribe Pancratieae
Tribe Narcisseae
Tribe Griffineae
Tribe Hippeastreae
Tribe Eustephieae
Tribe Eucharideae/Stenomesseae
Tribe Clinantheae
Tribe Hymenocallideae
There are over 50 recognized species, all native to central and southern Africa.[1][6][7]