Pachycereus marginatus or órganos, Cacti in Mexico, Teotihuacan Stock Photo Alamy

Lophocereus marginatus (DC.) S. Arias & Terrazas, Published in Systematic Botany 34(1):82 (2009) I refer to this taxon as belonging to the genus Pachycereus, because this is the most commmon published description, even though the genus Lophocereus is the most recent published description. Overall,. Stiff and imposing, Pachycereus marginatus (Mexican Fence Post Cactus) is a handsome columnar cactus that develops unbranched stems from the base when mature. The exceptionally straight, upright, dark green stems can reach 15 ft. or more (450 cm) in cultivation. Each rough stem possesses 5-7 ribs, which are lined with spines, mature specimens bearing shorter spines than juvenile specimens.

Pachycereus marginatus (001) Family Cactaceae Genus Pach… Flickr

Pachycereus marginatus Suculentas

Mexican Fence Post Cactus (Pachycereus Marginatus) J.J. Growers Nursery

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Mexican Fence Post Cactus (Pachycereus Marginatus) J.J. Growers Nursery

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Pachycereus marginatus

Pachycereus marginatus Desert

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Pachycereus marginatus

Pachycereus marginatus or órganos, Cacti in Mexico, Teotihuacan Stock Photo Alamy

Pachycereus marginatus

Pachycereus marginatus Cactus Jungle

The Pachycereus Marginatus flowers in mid to late spring, producing a delicate, pretty, pinkish-green flower. Each areole will produce 1-2 flowers. The flowers are small, and will only grow to a length of 1.5-2 inches. Towards the beginning of summer, the Pachycereus Marginatus produces a small, reddish-yellow fruit, approximately 2 inches in.. Pachycereus marginatus var. gemmatus (Zucc. ex Pfeiff.) P.V.Heath. Cereus gemmatus Zucc. ex Pfeiff. Description: Upright and clumping, stiff and imposing, columnar cactus with unbranched stems from the base. In the wild it grows up to 15 m in height, cultivated, it is columnar, up to 4 m tall or more. Stems: Erected, basally branching to 5-10.