Family Cactaceae

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Oreocereus celsianus
Common Name(s): Old Man of the Andes
Synonym(s): Pilocereus celsianus, Cereus celsianus, Borzicactus celsianus, Cereus fossulatus, Oreocereus fossulatus, Borzicactus fossulatus, Oreocereus maximus, Oreocereus neocelsianus

O. celsianus

Photo taken at: My Collection, San Clemente, CA
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O. celsianus
Photo taken at: My Collection, San Clemente, CA

O. celsianus
Photo taken at: Grigsby Cactus Gardens, Vista, CA

O. celsianus
Photo taken at: Quail Botanical Gardens, Encinitas, CA

Oreocereus doelzianus
Common Name(s): Old Man of the Andes
Synonym(s): Morawetzia doelziana, Borzicactus doelzianus, Morawetzia sericata


O. doelzianus

Photo taken at: Grigsby Cactus Gardens, Vista, CA


O. doelzianus
Photo taken at: Quail Botanical Gardens, Encinitas, CA

O. doelzianus
Photo taken at: Altman Growing Grounds, Vista, CA

O. doelzianus
Photo taken at: Altman Growing Grounds, Vista, CA

Oreocereus hempelianus
Common Name(s):
Synonym(s): Echinopsis hempelianus, Arequipa hempeliana, Echinocactus rettigii, Arequipa weingartiana, Arequipa erectocylindrica, Arequipa soehrensii, Arequipa spinosissima, Arequipa australis, Oreocereus australis


O. hempelianus

Photo taken at: Desert Botanical Garden , Phoenix, AZ


Oreocereus trollii
Common Name(s):
Synonym(s): Cereus trollii, Borzicactus trollii, Oreocereus crassiniveus

O. trollii

Photo taken at: My Collection, San Clemente, CA


Oreocereus leucotrichus
Common Name(s): Old Man of the Andes
Synonym(s): Echinocactus leucotrichus, Arequipa leucotricha, Borzicactus leucotrichus, Oreocereus hendricksenianus, Borzicactus hendriksenianus

O. leucotrichus

Photo taken at: Huntington Library, San Marino, CA


*Currently 5 of 9 known species shown in this genus.