Echinocactus horizonthalonius
Common Name(s): Blue Barrel Cactus, Devil's-Head Cactus, Eagle-Claw Cactus, Mancacaballo, Mancamula, Melon Cactus, Nichol's Turk's-Head Cactus, Turk's-Cap Cactus, Turk's-Head Cactus, Viznaga Meloncillo
Synonym(s): Meyerocactus horizonthalonis
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To view publication details for this taxon and related synonyms Click Here. |
To view a chart comparing alternate taxonomy Click Here. |
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 This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge. |

E. horizonthalonius
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Picture taken at: SDCSS 2008 Show at Balboa Park in San Diego
Photographer: Daiv Freeman
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E. horizonthalonius
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Picture taken at: Tony Marino's Private Collection
Photographer: Tony Marino
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E. horizonthalonius
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Picture taken at: Tony Marino's Private Collection
Photographer: Tony Marino
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E. horizonthalonius
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Picture taken at: Tony Marino's Private Collection
Photographer: Tony Marino
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E. horizonthalonius
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Picture taken at: Habitat Near Langtry, Texas
Photographer: Ed Utley
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E. horizonthalonius
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Picture taken at: Habitat Near Langtry, Texas
Photographer: Ed Utley
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E. horizonthalonius
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Picture taken at: Habitat Near Langtry, Texas
Photographer: Ed Utley
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E. horizonthalonius
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Picture taken at: Habitat Along the Texas-Mexico Boarder
Photographer: Ed Utley
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E. horizonthalonius
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Picture taken at: Anthony Gap, New Mexico
Photographer: Peter Breslin
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E. horizonthalonius
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Picture taken at: Tony Marino's Private Collection
Photographer: Tony Marino
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E. horizonthalonius
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Picture taken at: Tony Marino's Private Collection
Photographer: Tony Marino
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E. horizonthalonius
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Picture taken at: East of Alamogordo, New Mexico
Photographer: Craig Howe
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E. horizonthalonius
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Picture taken at: East of Alamogordo, New Mexico
Photographer: Craig Howe
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E. horizonthalonius
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Picture taken at: Big Bend National Park, Texas
Photographer: Craig Howe
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E. horizonthalonius
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Picture taken at: Big Bend National Park, Texas
Photographer: Craig Howe
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E. horizonthalonius
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Picture taken at: Joe Bradley's Private Collection
Photographer: Joe Bradley
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E. horizonthalonius
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Picture taken at: Joe Bradley's Private Collection
Photographer: Joe Bradley
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E. horizonthalonius
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Picture taken at: East of Viesca, Coahuila, Mexico
Photographer: Davide Donati
Photographer's Website: Click Here
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E. horizonthalonius
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Picture taken at: East of Viesca, Coahuila, Mexico
Photographer: Davide Donati
Photographer's Website: Click Here
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Echinocactus horizonthalonius f. variegata
Common Name(s): Blue Barrel Cactus, Devil's-Head Cactus, Eagle-Claw Cactus, Mancacaballo, Mancamula, Melon Cactus, Nichol's Turk's-Head Cactus, Turk's-Cap Cactus, Turk's-Head Cactus, Viznaga Meloncillo
Synonym(s): Meyerocactus horizonthalonis cristata
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To view publication details for this taxon and related synonyms Click Here. |
To view a chart comparing alternate taxonomy Click Here. |
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Species Notes: Variegation is a naturally occurring or viral induced mutation, which appears as stripes or whole sections of tissue that are without chlorophyll. Variegated varieties are often prized for the attractiveness of the markings caused by the mutation. |
 This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge. |

E. horizonthalonius f. variegata
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Picture taken at: Private Collection
Photographer: A Cactus Grower
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Echinocactus horizonthalonius var. nicholii
Common Name(s): Blue Barrel Cactus, Devil's-Head Cactus, Eagle-Claw Cactus, Mancacaballo, Mancamula, Melon Cactus, Nichol's Turk's-Head Cactus, Turk's-Cap Cactus, Turk's-Head Cactus, Viznaga Meloncillo
Synonym(s): Meyerocactus horizonthalonis, Meyerocactus horizonthalonis nicholii
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To view publication details for this taxon and related synonyms Click Here. |
To view a chart comparing alternate taxonomy Click Here. |
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 This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge. |

E. horizonthalonius var. nicholii
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Picture taken at: Ironwood National Monument, Arizona
Photographer: Ralf Holzheu
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: Ironwood National Monument, Arizona
Photographer: Ralf Holzheu
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: Ironwood National Monument, Arizona
Photographer: Ralf Holzheu
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: Ironwood National Monument, Arizona
Photographer: Ralf Holzheu
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: Juergen Menzel's Private Collection
Photographer: Juergen Menzel
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: Juergen Menzel's Private Collection
Photographer: Juergen Menzel
Photographer's Website: Click Here
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E. horizonthalonius var. nicholii
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Picture taken at: M&M Cactus Garden, Tucson Arizona
Photographer: Martin Molina
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E. horizonthalonius var. nicholii
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Picture taken at: Juergen Menzel's Private Collection
Photographer: Juergen Menzel
Photographer's Website: Click Here
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*Currently 6 of 6 known species are represented on CactiGuide.com.
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