Acanthocalycium thionanthum (Spegazzini) Backeberg 1935 – Echinopsis thionantha – (Spegazzini) Werdermann 1931 – Echinocactus thionanthus – Spegazzini 1905, – Lobivia thionantha – (Spegazzini) Britton & Rose 1922, – Echinocactus chionanthus – Spegazzini 1905, – Lobivia chionantha – (Spegazzini) Britton & Rose 1922, – Echinopsis chionantha – (Spegazzini) Werdermann 1931, – Acanthocalycium chionanthum – (Spegazzini) Backeberg…
Acanthocalycium glaucum F. Ritter 1964 – Echinopsis glaudna – H. Friedrich & G. D. Rowley 1974 – Echinopsis glauca – (F. Ritter) H. Friedrich & G. D. Rowley 1974 – Acanthocalycium aurantiacum – Rausch 1968, – Echinopsis aurantiaca (Rausch) = H. Friedrich & G. D. Rowley 1974 Plants usually solitary, globose to short cylindrical, bluegreen,…
Acanthocalycium spiniflorum (K. Schumann) Backeberg 1935 – Echinocactus spiniflorum K. Schumann 1903, – Echinopsis spiniflora (K. Schumann) A. Berger 1929 – Echinopsis violacea Werdermann 1931, – Acanthocalycium violaceum(Werdermann) Backeberg 1935 Plants usually solitary, globose to somewhat elongate, depressed apically, to 60 cm (24 in) high, 10-15 cm (3.9-5.9 in) in diameter. Ribs 16-20, acute, somewhat…
Acanthocalycium klimpelianum (Weidlich & Werdermann) Backeberg 1935 – Echinopsis klimpeliana – Weidlich & Werdermann 1927, – Lobivia klimpeliana – (Weidlich & Werdermann) A. Berger 1929 – Acanthocalycium peitscherianum – Backeberg 1935, – Echinopsis peitscheriana (Backeberg) – Friedrich & G. D. Rowley 1974 Plants solitary, flattened globose, to 10 cm (3.9 in) in diameter. Ribs about 19, acute,…
Acanthocalycium ferrarii – Rausch 1976 – Acanthocalycium variiflorum Backeberg 1966, not validly published Plants solitary, globose to cylindrical, green, to 12 cm (4.7 in) in diameter. Ribs as many as 18, rounded, swollen at areoles. Areoles oval, whitish. Spines horn colored to brown, usually straight, awl shaped. Central spines 1-4, to 1.5 cm (0.6 in) long. Radial spines 7-9,…