Lava Cactus

Description:

Growing in lava fields as their name suggests, these small cactus grow in clumps measuring up to 23 in (60 cm) in height. New growth on the cacti is yellow as the cacti mature the color fades becoming paler and eventually becomes a gray or black color with age. The creamy white flowers are visible in the early morning hours only, and have normally faded by 8 in the morning.

Habitat:

Bartolome Island, Galapagos