Ferocactus wislizeni

F. wislizeni is a cactus with an initially globose shape, which tends to become cylindrical during growth. Its stem is of a dark green colour and has several well marked ribs (similar, in the mature exemplars, to an accordion), on which protrude white and woolly areoles. From these ones come out yellowish radial spines, long and thin, and more robust central spines, of reddish colour and curved at the apex. During the flowering period, from summer to early autumn, F. wislizeni gives us beautiful flowers with bright colors, from yellow to red-orange, with a characteristic reddish median line and darker shaded tips.