The HPT-numbers mentioned here are no field numbers of collected plants. They are internal numbers (acczession numbers, receipt numbers) of the cactus collection of  Hans-Peter Thomas which are used for identification of individual plant clones in our collections. This is important since Opuntioids normally are propagated vegetatively.
Where a site locality of the respective plant is known or where a locality can be followed, this is mentioned after the plant name and the HPT-number. Otherwise the plant is mentioned as a ‚cultivation clone‘.

boliviana HPT 0146;

boliviana 'dactilifera' HPT 0460; cultivation clone

boliviana 'minor' HPT 0842; cultivation clone

boliviana 'subinermis' / 'ovallei' HPT 0670; cultivation clone

pentlandii 'fuauxiana' HPT 0212; cultivation clone

pentlandii 'pentlandii' HPT 0469;

pentlandii 'pentlandii' HPT 0470; cultivation clone

pentlandii 'pentlandii' HPT 0841; cultivation clone

pentlandii 'rossiana' HPT 0209;

pentlandii 'rossiana' HPT 0217; cultivation clone

spec. 'alboareolata' HPT 0127;

spec. 'ferocior' HPT 0471;

spec. 'ferocior' HPT 0472;

spec. 'zehnderi' HPT 0553;

sphaerica 'crassicylindrica' HPT 0119;

sphaerica 'dimorpha' HPT 0116;

sphaerica 'kuehnrichiana' HPT 0131; cultivation clone

sphaerica 'multiareolata' HPT 0139;

sphaerica 'pseudorauppiana' HPT 0144;

sphaerica 'sphaerica' HPT 0135;