Cephalocereus senilis

Cephalocereus

Cephalocereus genera have about 5 species of very slow growing columnar cactus, original of Mexico. It used to be a genera with more species (Britton & Rose mentions 48), but most of them have been transferred to Pilosocereus. The Cephalocereus name derives from Greek since cephalium is remarkably thickened.
Flowers have funnel shape and grows from cephalium.
Propagation is made by seeds or cuttings.