A Leafflower

Here in the north, in a Botanical garden, I had a lazy walk - then I see some small flowers growing from the leaves... Some photos, Google, hard to find, and then: a tropical genus, Phyllanthaceae, and a species,
Phyllanthus angustifolius. A new way (for me) to see the branches... "phyllanthoid branching"...

The english name for all of them, leafflowers, is just the right.