Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cacteae is a tribe of plants belonging to the family Cactaceae. They consist of species that either have no leaves at all, or have stems that resemble leaves. Some have scales that resemble leaves, but the majority have leaf-bases that have been fused either into ribs or tubercles. The Cacteae tribe is very large, comprising almost 75% of all the Cactaceae. As a result it has been sub-divided into eight sub-tribes, these being as follows: Cactanae, Cactinae, Cereinae, Echinocactinae, Echinocereinae, Epiphyllinae, Hylocereinae, and Rhipsalidinae. Members of this tribe have been moved around and often placed in other tribes.

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