The discoid, small, green joints reach up to 4 inches in length and have 3 to 5 pale yellow spines of 1 inch extending from brownish areoles, while yellow glochids cover the surface. In summer ...

The oval grass-green joints reach up to 8 inches in length and have 2 to 6, light yellow spines of 1 inch extending from multiple white areoles while yellow glochids cover the surface. In summe...

The green, thick, obovoid joints reach up to 4 inches in length and have 2 white spines extending from multiple areoles while brown glochids cover the surface. In summer the large yellow flower...

The oval-elongated, pale green, slightly pubescent joints, reach up to 12 inches in length and have small areoles. In summer the large pale yellow flowers are borne singly and then produce smal...

The flat, cylindrical, pale green, oblong or linear joints, reach up to 8 inches in length and have 1 to 4 greyish dark tipped spines of 1 1/4 inch extending from multiple areoles while brownis...

The broach cushions are formed by dull green or green, oval joints, reach up to 3 inches in length and are covered with small warts and have 10 to 15, bristle-like, white spines extending from ...

The oval, thick, pale green or purplish joints reach up to 6 inches in length and have 1 to 2 yellowish spines of 1 inch extending from upper and marginal brown areoles while yellow glochids an...

The oval-elongated, thin, flat green joints reach up to 7 inches in length and are without spines as the norm but may have 1 to 3 white, backwards arching spines together only on the marginal a...

The oval, thick, green joints reach up to 6 inches in length and have 2 to 4 yellowish spines of 1 inch extending from multiple brown areoles while brown glochids cover the surface. In summer t...

This deep coppery-green, upright, branching, bush reaches between 9 and 20 feet in height, has barbed spines in the wild but is spineless in cultivation. The joints are elongated-oval or oval a...