Boxing glove cactus 

Family: Cactaceae
Scientific name: Cylindropuntia fulgida var. mamillata
Description: Plant Form: Upright succulent shrub. Size: Up to 1 m tall. Stem: Fleshy and with spines up to 2 cm long. Green to greyish-green. Lumpy or corrugated twisty appearance. Can be cylindrical to club shaped, boxing glove shaped, or small and loosely attached. Flowers: Deep red, rarely present. Fruit and Seeds: Cone or egg-shaped, greyish green, seedless in Australia, and rarely seen. Habitat: Grasslands, woodlands, urban areas, waterways, rangelands. Distinguishing Features: Twisty stems distinguish from other Cacti (Cactaceae family). Weed Status: Priority Weed Weed Type: Environmental, Invasive Garden Escapee Lifeform: Cacti/succulent

Example images for this weed