Subspecies, varieties, forms and cultivars of plants belonging to the Rebutia spegazziniana group

• Rebutia froehlichiana Rausch
• Rebutia fusca F.Ritter: has tiny bristle spines and vibrant orange-red flower. Distribution: Oruro, Tarija, Bolivia.
• Rebutia mamillosa Rausch: has dark greenish brown bodies becoming bronzed purple in full sun and forms small clumps of small heads around 20 mm across. Flowers dark red, ca. 2,5 cm in diameter with showy white stamens. Distribution: west of Camargo and adjacent areas, Chuquisaca, Bolivia.
• Rebutia mamillosa var. australis F.Ritter: has bodies 20-30 mm wide, 10-15 ribs, 12-20 radial spines, 3-6 mm long and 0-4 centrals equal in length. Flowers 26-46 mm long with white filaments. Distribution: Habitat, San Antonio, Prov. Mendez, Bolivia.
• Rebutia mamillosa var. orientalis F.Ritter: has areoles abundantly filled with white wool, 0-4 radial spines, 5-7 mm long, darker at base. Distribution: Tarija towards the south, Bolivia.
• Rebutia patericalyx F.Ritter: has vibrant orange-red flower and tiny bristle spines covered by tiny hairs. Distribution: La Queva, Chuquisaca, Bolivia.
• Rebutia rubiginosa F.Ritter
• Rebutia spegazziniana Backeb.: widespread and variable species that will clump with age and produces large and beautiful bright red flowers. Distribution: Bolivia and Argentina.
• Rebutia spegazziniana var. atroviridis (Backeb.) Šída: has darker bluish grey-green skin and lighter, weaker spines. Blooms dark red. Distribution: Bolivia and Argentina.
• Rebutia spegazziniana var. boliviensis n.n., Rausch
• Rebutia sumayana Rausch
• Rebutia tarijensis Rausch
• Rebutia tarvitaensis F.Ritter: has grey-green to olive-green epidermis with violet tints and orange-red blooms. Distribution: Tarvita, Chuquisaca, Bolivia.
• Rebutia tuberosa F.Ritter
• Rebutia vulpina F.Ritter: Flowers are bright red, the petals tipped scarlet, stigma and stamens white. Distribution: Bolivia, Tarija, Mendez, west of Tarija.
• Rebutia zecheri Rausch