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Cephalocereus cacti
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Photographer: Unspecified Photographer

Cactaceae: Cephalocereus cacti growing on hillside

Cephalocereus columna-trajani in the Tehuacan Valley in southern Puebla, Mexico. This strange white cactus usually has only one stem for its whole life. Legions of C. columna-trajani covering hillsides is one of the strangest sights I've ever seen. The grayish swatch on one side of the stem near the tip is a mass of hairs from which the flowers emerge.

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