There are 17 accepted species: •
Castela calcicola (Britton & Small) Ekman ex Urb. •
Castela coccinea Griseb. •
Castela depressa Turpin •
Castela emoryi (A.Gray) Moran & Felger – Crucifixion thorn •
Castela erecta Turp. – Goatbush •
Castela galapageia – Bitterbush •
Castela jacquiniifolia (Small) Ekman ex Urb. •
Castela leonis Acuña & Roíg •
Castela macrophylla Urb. •
Castela peninsularis Rose •
Castela polyandra Moran & Felger •
Castela retusa Liebm. •
Castela spinosa Cronquist •
Castela stewartii (C.H.Müll.) Moran & Felger •
Castela tortuosa Liebm. •
Castela tweediei Planch. •
Castela victorinii Acuña & Roíg ==References==