How to identify Phyllanthus?

Can we know the species of Phyllanthus by seeing it? What are the characters distinguishing Phyllanthus urinaria and Phyllanthus niruri? Cubists are trying to see difference in stem of Phyllanthus species…

Phyllanthus plant has multiple leaves, which are arranged across an axis. Is the axis a single leaf or a branch?
Is Phyllanthus having simple leaf or compound leaf?

Where is the fruit of Phyllanthus.

Lets list the characters of Phyllanthus to identify them from roadsides.

Image of Phyllanthus plants from roadside in rainy season…