| | Species and varieties
Bisnaga cornigera synonym of Ferocactus latispinus ssp. latispinus (Devil's Tongue Barrel, Crow's Claw Cactus)
Bisnaga electracantha synonym of Ferocactus histrix (Electrode Cactus)
Bisnaga flavovirens synonym of Ferocactus flavovirens
Bisnaga glaucescens synonym of Ferocactus glaucescens
Bisnaga haematacantha synonym of Ferocactus haematacanthus
Bisnaga hamatacantha synonym of Ferocactus hamatacanthus ssp. hamatacanthus (Turks Head)
Bisnaga hamatacantha ssp. sinuata synonym of Ferocactus hamatacanthus ssp. sinuatus
Bisnaga histrix synonym of Ferocactus histrix (Electrode Cactus)
Bisnaga macrodisca synonym of Ferocactus macrodiscus ssp. macrodiscus (Biznaga de Dulce)
Bisnaga macrodisca ssp. septentrionalis synonym of Ferocactus macrodiscus ssp. septentrionalis
Bisnaga recurva synonym of Ferocactus latispinus ssp. latispinus (Devil's Tongue Barrel, Crow's Claw Cactus)
Bisnaga recurva ssp. latispina synonym of Ferocactus latispinus ssp. latispinus (Devil's Tongue Barrel, Crow's Claw Cactus)
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