Field number : WTH 833
Collector : Wolter ten Hoeve
Species : Thelocactus bicolor v. schwarzii 
Locality : In nearly flat land South of Fortin Agrario, Tamaulipas, Mexicó
Date : 2009
Notes :
Also Astrophytum asterias, Echinocactus texensis and Ancistrocactus
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Taxonomy of the Cactaceae - Joël Lodé = Thelocactus bicolor subsp. schwarzii
New Cactus Lexicon - David Hunt = Thelocactus bicolor subsp. schwarzii
The International Plant Names Index : https://www.ipni.org
Thelocactus ((K. Schumann) Britton & Rose 1922)
Thelocactus bicolor ((Galeotti ex Pfeiff.) Britton & Rose 1922)
Semeurs de cactus
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