The previous page is sending you to https://bioone.org/journals/cactus-and-succulent-journal/volume-79/issue-3/0007-9367(2007)79%5B139%3ACM%5D2.0.CO%3B2/Corynopuntia-marenae/10.2985/0007-9367(2007)79[139:CM]2.0.CO%3B2.pdf.

 If you do not want to visit that page, you can return to the previous page.