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 pinkavae magenta anthers and white styles. Fruits are tan, up to 3 cm (1.2 inches) long, dry when ripe. There is a bit of confusion concerning the correct scientific name. Specimens of "O. pinkavae" were distributed for years labeled as ""Opuntia kaibabensis"", a name that was never validly published. Parfitt's original description coining the name "Opuntia pinkavae" and the treatment attributed to Pinkava in Flora of North America suggest that the name was offered as a replacement for another allegedly unpublished name, "Opuntia basilaris" var. "woodburyi". However, the varietal name was indeed validly published, but chromosomal comparisons between it and "O.