Gymnocalycium schickendantzii (F. A. C. Weber) Britton & Rose 1922 Echinocactus schickendantzii F. A. C. Weber 1896 Gymnocalycium michoga Fric ex Y. Ito 1957 Gymnocalycium anthemstele F. Ritter 1980 Plants solitary, globose, dark olive green to brownish green, to 10 cm (3.9 in) in diameter. Ribs 7-14, distinctly tuberculate but running together. Spines 6-7, somewhat flattened, Gymnocalycium spegazzinii 361 curved outward or downward, reddish gray to yellowish brown, to 3 cm (1.2 in) long. Flowers with long floral tubes, white to reddish, to 5 cm (2 in) long. Fruits ovoid, green to slaty blue. Distribution: northwestern Argentina. "CLAVAICO" MOSTOLEÑO !!!! Muchas gracias !!! y saludos.