Field number : LAU 1245
Collector : Alfred Bernhard Lau
Species : Mammillaria berkiana 
Locality : Mexicó : Jalisco (San Andres Cohamiata , Sierra Huichol 1800-2200m) Google Maps * Geocode
Date : 18/04/1980
Notes :
together with Mammillaria senilis, Mammillaria densispina
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http://www.mammillarias.net
Field number : L 1245
Collector : Alfred Bernhard Lau
Species : Mammillaria berkiana
Locality : Mexicó : Jalisco (San Andres Cohamiata , Sierra Huichol 1800-2200m) Google Maps * Geocode
Date : 18/04/1980
Notes :
together with Mammillaria senilis, Mammillaria densispina
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http://www.mammillarias.net
Field number : LAU 1572
Collector : Alfred Bernhard Lau
Species : Mammillaria berkiana f.
Locality : Mexicó : Durango (Sierra Tepehuan, Los Cuernos, North of Huazamota 2400m) Google Maps * Geocode
Date : 13/06/1988
Notes :
together with L1573
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http://www.mammillarias.net
Field number : L 1572
Collector : Alfred Bernhard Lau
Species : Mammillaria berkiana f.
Locality : Mexicó : Durango (Sierra Tepehuan, Los Cuernos, North of Huazamota 2400m) Google Maps * Geocode
Date : 13/06/1988
Notes :
together with L1573
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http://www.mammillarias.net
Field number : SH 1245
Collector : Dennis Sargant (plants collected by Alfred Bernhard Lau)
Species : Mammillaria berkiana
Locality : Mexicó : Jalisco (San Andres Cohamiata , Sierra Huichol 1800-2200m) Google Maps * Geocode
Date : 18/04/1980
Notes :
together with Mammillaria senilis, Mammillaria densispina
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http://www.mammillarias.net
Field number : SH 1572
Collector : Dennis Sargant (plants collected by Alfred Bernhard Lau)
Species : Mammillaria berkiana f.
Locality : Mexicó : Durango (Sierra Tepehuan, Los Cuernos, North of Huazamota 2400m) Google Maps * Geocode
Date : 13/06/1988
Notes :
together with L1573
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http://www.mammillarias.net
Field number : ROG 508
Collector : Helmut Rogozinski
Species : Mammillaria berkiana
Locality : Mexicó : Nayarit (Jesus Maria) Google Maps * Geocode
Date : 1999
Notes :
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http://www.mammillarias.net
Field number : MMR 107
Collector : Milan Majer
Species : Mammillaria berkiana
Locality : Mexicó : Durango (Espinazo Del Diablo) Google Maps * Geocode
Date :
Notes :
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http://www.mammillarias.net
Field number : WK 249
Collector : Wolfgang Krueger
Species : Mammillaria berkiana
Locality : Mexicó : Zacatecas (Jesús María to San Juan Capistrano) Google Maps * Geocode
Date : 1992
Notes :
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http://www.mammillarias.net
Field number : WK 330
Collector : Wolfgang Krueger
Species : Mammillaria berkiana
Locality : Mexicó : Nayarit (Jesús María to San Juan Capistrano) Google Maps * Geocode
Date : 1993
Notes :
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http://www.mammillarias.net