Field number : GM 461
Collector : Grzegorz Matuszewski
Species : Echinofossulocactus violaciflorus 
Locality : Mexicó : Zacatecas (Ojo Caliente, 2060 m) Google Maps * Geocode
Date : 1999
Notes :
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Field number : GM 544
Collector : Grzegorz Matuszewski
Species : Echinofossulocactus violaciflorus
Locality : Mexicó : San Louis Potosi (Villa de Arriaga, 2250 m) Google Maps * Geocode
Date : 2000
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Field number : GM1761
Collector : Grzegorz Matuszewski
Species : Echinofossulocactus violaciflorus (dichroacanthus s.lato)
Locality : Mexicó : Guanajuato (El Puertecito, 2060 m) Google Maps * Geocode
Date :
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Field number : CH 362
Collector : Jaromír Chvastek
Species : Echinofossulocactus violaciflorus
Locality : San Luis Potosi to Guanajuato, Route 57, Guanajuato, Mexicó 1990m Google Maps
Date : 22/10/1990
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Field number : RS 456
Collector : Roman Staník
Species : Echinofossulocactus violaciflorus aff.
Locality : Mexicó : Zacatecas (Zacatecas above city) Google Maps * Geocode
Date :
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Field number : REPP 2362
Collector : Werner Reppenhagen
Species : Echinofossulocactus violaciflorus
Locality : Mexicó : Guanajuato (Guanajuato, 2250m) Google Maps * Geocode
Date : 29/11/1989
Notes :
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Field number : REP 2362
Collector : Werner Reppenhagen
Species : Echinofossulocactus violaciflorus
Locality : Mexicó : Guanajuato (Guanajuato, 2250m) Google Maps * Geocode
Date : 29/11/1989
Notes :
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