Field number : LAU 732
Collector : Alfred Bernhard Lau
Species : Gymnocactus knuthianus 
Locality : Mexicó : San Luis Potosi (Guadalcazar 1500m) Google Maps * Geocode
Date : 18/11/1974
Notes :
together with L733
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Field number : L 732
Collector : Alfred Bernhard Lau
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Guadalcazar 1500m) Google Maps * Geocode
Date : 18/11/1974
Notes :
together with L733
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Field number : Z 161
Collector : Carlo Zanovello
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Villar) Google Maps * Geocode
Date :
Notes :
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Field number : GLF 872a
Collector : Charles (Charlie) Edward Glass, Robert Alan (Bob) Foster (also see notes)
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Villar, West of Garcia, road from Charco to Guadalcazar) Google Maps * Geocode
Date :
Notes :
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Field number : GLF 872
Collector : Charles (Charlie) Edward Glass, Robert Alan (Bob) Foster (also see notes)
Species : Gymnocactus knuthianus
Locality : Mountains near Garcia, road to Guadalcazar, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
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Field number : SH 732
Collector : Dennis Sargant (plants collected by Alfred Bernhard Lau)
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Guadalcazar 1500m) Google Maps * Geocode
Date : 18/11/1974
Notes :
together with L733
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Field number : ROG 453
Collector : Helmut Rogozinski
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Villar) Google Maps * Geocode
Date : 1998
Notes :
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Field number : IDD 0098
Collector : Igor D. Dráb
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Guadalcazar) Google Maps * Geocode
Date : 28/04/1993
Notes :
CSD 093
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Field number : IDD 0568
Collector : Igor D. Dráb
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (10 km za Guadalcazar) Google Maps * Geocode
Date : 20/04/1999
Notes :
idd031/99 druhá lúka vpravo od cesty aj Coryphantha sp. , Thelocactus hexaedrophorus
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Field number : CSD 93
Collector : Jaromír Chvastek, Roman Staník, Igor Dráb
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Guadalcazar) Google Maps * Geocode
Date : 29/04/1997
Notes :
IDD98
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Field number : KKR 359
Collector : Karel Kracik
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Guadalcazar e) Google Maps * Geocode
Date :
Notes :
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Field number : LRM 420
Collector : Living Rocks of Mexico. Now Geoff Bailey, John Miller, previously also David (Dave) Rushforth.
Species : Gymnocactus knuthianus
Locality : Pozo de Acuña, San Luis Potosi, Mexicó Google Maps
Date : 25/06/09
Notes :
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Field number : MMR 197.1
Collector : Milan Majer
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Guadalcázar) Google Maps * Geocode
Date :
Notes :
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Field number : MZ 146
Collector : Milan Zachar
Species : Gymnocactus knuthianus
Locality : Guadalcazar, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
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Field number : MZ 148
Collector : Milan Zachar
Species : Gymnocactus knuthianus
Locality : Guadalcazar, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
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Field number : MZ 725
Collector : Milan Zachar
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Villar) Google Maps * Geocode
Date :
Notes :
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Field number : MZ 726
Collector : Milan Zachar
Species : Gymnocactus knuthianus
Locality : Guadalcazar, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
magenta flowers
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Field number : MK 113.372
Collector : Miloš Kaplan
Species : Gymnocactus knuthianus
Locality : Cerritos, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
yellow spines
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Field number : KMR 4
Collector : Miroslav Kupčák
Species : Gymnocactus knuthianus
Locality : Guadalcazar, South of Huizache, San Luis Potosi, Mexicó Google Maps
Date : 27/06/09
Notes :
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Field number : PP 999
Collector : Pavel Pavlíček
Species : Gymnocactus knuthianus f.
Locality : Mexicó : San Luis Potosi (Villar) Google Maps * Geocode
Date :
Notes :
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Field number : RS 265
Collector : Roman Staník
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Guadalcazar) Google Maps * Geocode
Date :
Notes :
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Field number : RS 678
Collector : Roman Staník
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (Villar) Google Maps * Geocode
Date :
Notes :
yellow spines
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Field number : RS 679
Collector : Roman Staník
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosi (before Guadalcazar) Google Maps * Geocode
Date :
Notes :
white spines
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Field number : RUS 585
Collector : Safronov Evgeny
Species : Gymnocactus knuthianus f. albispinus
Locality : Mexicó : SLPotosi (Guadalcazar) Google Maps * Geocode
Date :
Notes :
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Field number : RUS 586
Collector : Safronov Evgeny
Species : Gymnocactus knuthianus yellowsp
Locality : Mexicó : SLPotosi (San Jose de Carvantes (Villar)) Google Maps * Geocode
Date :
Notes :
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Field number : DU 6a
Collector : Ulrich Dosedal
Species : Gymnocactus knuthianus
Locality : West / East of Guadalcazar, San Luis Potosi, Mexicó Google Maps
Date :
Notes :
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Field number : VM 363
Collector : Vojtech Myšák
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (14 km W Cerritos) Google Maps * Geocode
Date :
Notes :
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Field number : REP 1004A
Collector : Werner Reppenhagen
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Cerritos, km 14, 1550m) Google Maps * Geocode
Date : 16/10/1975
Notes :
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Field number : REPP 1004A
Collector : Werner Reppenhagen
Species : Gymnocactus knuthianus
Locality : Mexicó : San Luis Potosí (Cerritos, km 14, 1550m) Google Maps * Geocode
Date : 16/10/1975
Notes :
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Field number : WTH 37
Collector : Wolter ten Hoeve
Species : Gymnocactus knuthianus
Locality : North-West of Pozo de Acuña, San Luis Potosi, Mexicó Google Maps
Date : 2001
Notes :
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