"There's a plant called thyme, but I don't know what it looks like."

There's a small community of women in Morocco who make oil from a plant called argon.

In 1960s it was the biggest supplier of a plant called plash.

One is a broad expanse of a plant called black needle rush.

"Everywhere you go there is some plant called wild cucumber."

There was a plant called Chinese weed which having got hold never let go, and spread till it covered everything.

A green substance in plants called chlorophyll traps the energy from the Sun needed to make food.

Last spring enough seeds were available to test the new plant, called "super rice" by the research center, in small plots.

It has an online field guide of plants and animals called Enature.com.

About 550,000 people were then employed in Mexican plants, called maquilladoras.