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Thelocactus bicolor
Common Name(s): Glory of Texas, Straw Spine Cactus, Texas Pride
Synonym(s): Echinocactus bicolor, Hamatocactus bicolor, Ferocactus
bicolor, Echinocactus bicolor, Thelocactus pottsii, Echinocactus
rhodaophthalmus, Echinocactus bolaensis, Echinocactus schottii,
Echinocactus wagnerianus, Thelocactus wagnerianus, Thelocactus flavidispinus,
Thelocactus schwarzii |

T. bicolor
subsp. schwarzii |
Photo taken at: My Collection, San
Clemente, CA
click any picture to enlarge
Subspecies: schwarzii
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T. bicolor
subsp. flavidispinus |
Photo taken at: Desert Botanical
Garden , Phoenix, AZ
Subspecies: flavidispinus |
Thelocactus conothelos
Common Name(s):
Synonym(s): Echinocactus conothelos, Gymnocactus conothelos,
Torreyocactus conothelos, Echionocactus smithii, Thelocactus smithii,
Meolloydia smithii, Pediocactus smithii, Echinocactus saussieri,
Thelocactus saussieri, Thelocactus panarottoanus |

T. conothelos |
Photo taken at: Huntington Library, San Marino, CA
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T. conothelos |
Photo taken at: Gene Schroeder's
Private Collection, Orange, CA |
Thelocactus hexaedrophorus
Common Name(s):
Synonym(s): Echinocactus hexaedrophorus, Echinocactus fossulatus,
Thelocactus fossulatus, Echinocactus droegeanus, Echinocactus labouretianus,
Thelocactus lloydii |

T. hexaedrophorus |
Photo taken at: Desert Botanical Garden , Phoenix, AZ
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T. hexaedrophorus |
Photo taken at: Cal Cactus, Bonsall,
CA |

T. hexaedrophorus |
Photo taken at: Cal Cactus, Bonsall,
CA |
Thelocactus lausseri
Common Name(s):
Synonym(s): |

T. lausseri |
Photo taken at: Gene Schroeder's Private Collection, Orange,
CA
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Thelocactus leucacanthus
Common Name(s):
Synonym(s): Echinocactus leucacanthus, Ferocactus leucacanthus,
Cereus maelenii, Cereus tuberosus, Echinocactus ehrenbergii, Thelocactus
ehrenbergii, Thelocactus porrectus, Thelocactus sanchezmejoradai |

T. leucacanthus |
Photo taken at: Desert Botanical Garden , Phoenix, AZ
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T. leucacanthus |
Photo taken at: Gene Schroeder's
Private Collection, Orange, CA |
Thelocactus macdowellii
Common Name(s):
Synonym(s): Echinocactus macdowellii, Echinomastus macdowellii,
Neolloydia macdowellii, Thelocactus conothelos |

T. macdowellii |
Photo taken at: Huntington Library, San Marino, CA
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Thelocactus rinconensis
Common Name(s): Bird's Nest Cactus
Synonym(s): Echinocactus rinconensis, Echinocactus lophothele,
Echinocactus phymatothelos, Thelocactus phymatothelos, Echinocactus
nidulans, Thelocactus nidulans, Thelocactus multicephalus |

T. rinconensis |
Photo taken at: Grigsby Cactus Gardens, Vista, CA
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T. rinconensis |
Photo taken at: C&J Cactus Nursery,
Vista, CA |

T. rinconensis |
Photo taken at: Altman Growing Grounds,
Vista, CA |
Thelocactus tulensis
Common Name(s):
Synonym(s): Echinocactus tulensis, Echinocactus buekii, Thelocactus
buekii, Thelocactus krainzianus, Thelocactus matudae, Thelocactus
flavus |

T. tulensis |
Photo taken at: C&J Cactus Nursery, Vista, CA
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T. tulensis |
Photo taken at: Gene Schroeder's
Private Collection, Orange, CA |

T. tulensis |
Photo taken at: Gene Schroeder's
Private Collection, Orange, CA |
*Currently 8 of 12 known species shown
in this genus. |
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