Redirecting here from the above Wiki post created by @KiranKalakotiR
How can one species P. amarus be mistaken with four other species of Phyllanthus genus?
There must be similarities in the characteristics till the genus level among all the above-mentioned species. But, to solve this so-formulated controversy, we’ll have to see where and how do these characteristics diverge inorder to give rise to new species?
Searching for literature (a secondary data source) is a must as @Lakshmy did is a must and at the same time, we should utilise the BUILD (Better Understanding Involves Learning and Doing) and Collaborative power of CUBE.
That would indeed require a firm introduction to this controversy and followup discussion.
Thanks for bringing this up!
Let’s do it!