The Genus Melocactus is a group of cacti with unique characteristics and a distinctive appearance. These plants are often called Turk's cap cacti because their shape resembles a traditional Turkish fez. Other synonyms for Genus Melocactus include "melon cactus" due to the presence of a large, round, water-storing body at the top of the stem, and "candlestick cactus" due to their tall, narrow stems. Some species of Genus Melocactus are also referred to as "pineapple cacti" due to the spiny tufts that resemble the crown of a pineapple. These fascinating cacti are beloved by collectors and gardeners alike, and their unique appearance makes them a stand-out addition to any collection.