The narrow green joints can be either oblong or linear, reaching up to 5 inches in length and 1 inch across. They can be either glabrous or hairy and have yellowish-brown glochids. In summer the bell-shaped, small, yellow flowers are […]

The green branching, slender stems criss-crossing each other have linear joints to 5 inches in length. The round, white closely set areoles have yellow glochids with 3/8 inch tufts and it is also heavily guarded with spines. In summer the […]

The spiny, pale green, orbicular or oval, thin, flattened joints, reach up to 2 1/2 inches in length and have up to 8 yellow or brown spines of 2 inches. In summer the large flowers are borne singly and then […]

The green joints, reach up to 2 inches in length and have no spines but multiple large areoles while brownish-red or chocolate brown glochids cover the surface. In summer the large yellow or orange-yellow flowers are borne singly and then […]

The oval, pale green pubescent joints and have upward directed yellowish spines extending from close set areoles. In summer the large pale red flowers are borne singly and then produce fruit. This genus has the largest membership of sun loving […]

This fleshy padded, branching stemmed, mat-forming green cactus has barbed spines and bristled tufts guarding its body. In the summer the flowers are borne singly on the edge of the pad, stem tips and then produce often edible fruit. This […]

The small, thick, oval, flattened, dull or reddish green joints have prominent spineless areoles, and glochids cover the surface. In summer the large flowers are red on the exterior and yellowish-pink on the interior and have erect brushlike stamens. This […]

The prostrate pale green, smooth, narrowly flattened joints have 1 or 2 awl shaped brownish to yellowish spines extending from wide spaced areoles. In the summer the large flowers are borne singly and then produce fruit. This genus has the […]

The deep green joints are cylindrical, 1 to 3 inches long, slightly warty, hairy, covered with slender brown, aging to grey, spines. In summer the bell-shaped, large yellow flowers are borne singly on the stem tips and then produce round […]

The oval, coppery green joints reach up to 10 inches in length and are spineless or have few. In summer the large orange-yellow flowers are borne singly and then produce fruit. This genus has the largest membership of sun loving […]