Opuntia cacanapa Opuntia cacanapa Opuntia cacanapa is a cactus in the "Opuntia" genus. In the United States it is found on the South Texas Plains in Brewster County and adjacent counties to the southeast. It also occurs in nearby Mexico. The plants are variable in size, but can form shrubby trees from 1 to 2 m tall. They grow intermixed with other shrubs and small trees. The glaucous pads are pale and not dark green. Cladodes are 15 to 20 cm long and may be elliptical, obovate, or even subcircular. The flowers are a rich, canary yellow and have a prominent green
Opuntia ficus-indica the wild origin of "O. ficus-indica" is likely to have been in Mexico due to the fact that its close genetic relatives are found in central Mexico. "Opuntia ficus-indica" is polyploid, hermaphrodite and autogamous. As "Opuntia" species grow in semi-arid environments, the main limiting factor in their environment is water. They have developed a number of adaptations to dry conditions, notably succulence. The perennial shrub "Opuntia ficus-indica" can grow up to 3-5m height, with thick, succulent and oblong to spatulate stems called cladodes. It has a water-repellent and sun-reflecting waxy epidermis. Cladodes that are 1–2 years old produce flowers, the