Differentiating plant species...

[schoeplein]

Limnophila aromatica
Ludwigia inclinata var. verticillata
Pogostemon stellatus


Um. How the heck do I differentiate these three species?

 

[schoeplein]

Limnophila aromatica apparently has jagged leaves. And when crushed gives off a pleasant scent.

Ludwigia inclinata has longer leaves, darker green, red veins.

Pogostemon stellatus has thinner, denser leaves.