Cephalocereus senilis (Old Man Cactus) is a columnar cactus with clusters of erect, usually unbranched stems with 20 to 30 ribs and a…
Cephalocereus is a genus of slow-growing, columnar-shaped, blue-green cacti. The name Cephalocereus means "Cereus with a cephalium". The genus is native to Mexico.
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