Friday, January 19, 2007

Jumping Cholla
From a distance the jumping cholla, or teddy bear cholla, looks like a fuzzy, soft plant with many short, fuzzy branches looking like teddybear arms, growing from the top. As you get closer you realize that the cuddly looking plant is completely covered with silvery spines. If you are unlucky enough to touch the spines, you will find yourself painfully stuck to a spiny segment that seems to have "jumped" off the plant. Segments will also "jump" when stepped on and attach themselves to your leg. The jumping cholla have developed several adaptations to survive in the arid desert environment of its habitat. The thick covering of spines shades the plant from the desert heat. They also prevent animals from eating them. The stems are separated into segments that store water and allow for photosynthesis. They separate easily so that animals, and even a strong wind can disperse them away from the parent Cholla.