You might also look at how big or fast each group of plants grows.

Populations of each plant group are estimated to be around 100-120 individual plants.

Scientists say it remains to be seen whether whole groups of plants or fish, for example, are also suffering.

Many groups of plants and animals appeared to be neglected.

They are home to a diverse group of native plants and animals.

Surround each group of plants with a different color fabric.

How sad to eliminate a whole group of wonderful plants.

Now, they're coming back as a different group of plants.

It is a group of small plants that are widely distributed.

They were one of the most important plant groups in the Palaeozoic era.