Dehan knew this place, built into a high hillside of some tropical world.

There are about 35 species distributed throughout the tropical world.

All the lushness of that tropical world had not seemed truly natural to Kirk.

I doubt it would have much use on, say, a tropical world where the general demand would be small.

This is an aquatic plant native to much of the tropical world.

It is native to most of the tropical world, and has been introduced widely.

This species is widely used as a green manure or pasture plant throughout the tropical world.

I'd spent enough of my life on tropical worlds.

So she went to Panama to immerse herself in a tropical world she knew nothing about - and found a new path.

Stylosanthes has been introduced across the tropical world as a pasture species.