Bronzebell

This modest-sized cactus grows up to 65 feet (19.8 meters) tall. The very thick stem is moss green, and is covered in handfuls of rigid hazel spines.

It is slow growing, taking 31 years to reach maturity. Once mature, a handful of flowers, with alternating petals of white and green, with a brilliant blue central disk, grow at the top, reappearing once every 5 years. The flower head is an uncoordinated mess of 33 curved petals. It has a delicate scent that smells like marzipan.

The cactus's skin is rock-hard, the green flesh is sticky, and the bronze sap is thin.