nipple beehive cactus

The nipple beehive cactus (Coryphantha macromeris) is a species of cactus belonging to the genus Coryphantha, which is part of the family Cactaceae. This genus, native to western North America and central Mexico, includes nearly 60 species.1

Beehive cacti are characterized by their globose to cylindroid shapes and tubercles, which are protuberances that do not form true ribs. The nipple beehive cactus is relatively small, growing to less than 15 cm (6 inches) in height. A distinctive feature of the Coryphantha genus is a groove on the top of the tubercle, which connects the spine and flower-bearing parts, differentiating it from the genus Mammillaria. Beehive cacti produce large flowers in various shades, and their fruits are edible berries. Some species within this genus are cultivated as ornamentals, while others are listed as endangered.1