Thelocactus buekii is a species of cactus. It is endemic to Mexico.
Thelocactus buekii is a solitary, globular cactus, with depressed stems, with dark reddish to dull green body 5 to 22 centimeters high and 11 to 16 centimeters in diameter. It has conical tubercles that are 1.5 to 2.5 cm long. The areoles are woolly when young, with 3 to 7 central spines that are gray to red, measuring only 2 centimeters long. Additionally, it has 7 to 12 radial spines. The flowers of Thelocactus buekii are pink, measuring 8 cm in diameter.[1]
Thelocactus buekii is native to the limestone hills in the Chihuahuan Desert between Dr Arroyo and Galean of Nuevo León, Mexico at elevations of 800 to 1000 meters.[2] [1]
It was first described in 1859 as Echinocactus buekii by Eduard Petrowitsch Klein. The plant was named after German botanist Johannes Nicolaus Buek.[3]