22. Cellulose

It's like a flower made up of little flowers!

Definition: Cellulose is a carbohydrate inside the cell walls of plants. This compound is what makes the cell wall strong and rigid. It is also found in paper, wood and cotton fibers.

What the specimen is: This plant is a hydrangea. The scientific name for this plant is hydrangea macrophylla. 

Where we found it: This flower was found in a nursery, since it is a common decorative plant in gardens.

How it relates to cellulose: Like all plants, hydrangeas have thick cell walls that are made up of several organic compounds including cellulose.