F. horridus “brevispinus” is a solitary fast growing little barrel cactus with quite short and stocky cental spine one (not enough to call it curved!) This plant becomes very nice when a bit older. Stem:Round to elongated dark green 25-40 cm in diameter 40-100 tall. Central spines: Has a very short but strong, recurving brownish-grey, large central spine. Slightly hooked or just with a slight kink at the end. Very dark red to almost black that can take a chalky colour ageing. Radial spines:7-10 short, straight but stout Flower: Orange/Yellow and have orange or red midviens.