Opuntia atrispina at the tips but dark brown at the bases. Opuntia atrispina Opuntia atrispina is a cactus species in the "Opuntia" genus. It has limited distribution in the United States. In Texas it can be found from near Uvalde to Del Rio/Langtry—a small strip of area just 50 miles long. The flowers on these small shrubs are special because they open pale yellow (sometimes almost white) and darken with age to rose. Thus, the plants can be adorned with flowers of multiple colors: cream, yellow, salmon, and rose. Newly opened flowers can even have a hint of green in the middle.
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to Pinkava in Flora of North America suggest that the name was offered as a replacement for another allegedly unpublished name, "Opuntia basilaris" var.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.