The genus Ludwigia in India has recently been revised by I.C. Barua.
Based on his keys I was able to identify this plant as Ludwigia prostrata.
It is only after reading this publication, especially the keys, that I am getting oriented to the species in this genus.
The plant was seen at Arrey, Goregoan in a marshy area. It's habit erect, standing about 2 feet tall and well branched. The stem was herbaceous throughout it's length. The stem and branches both were winged. The leaves were acuminate at the apex; Both the stems and wings were glabrous.
The image to the right shows a winged stem, with a winged branch and a subdecurrent leaf base.
The flower was small, no more than a centimeter across with four yellow petals and four sepals.
I was lucky to have captured the ripe fruit and opened it to have a look at the seeds. The capsule wall was brittle and fragmented, the seeds being tiny and light dispersed almost instantaneously.
Based on his keys I was able to identify this plant as Ludwigia prostrata.
It is only after reading this publication, especially the keys, that I am getting oriented to the species in this genus.
The plant was seen at Arrey, Goregoan in a marshy area. It's habit erect, standing about 2 feet tall and well branched. The stem was herbaceous throughout it's length. The stem and branches both were winged. The leaves were acuminate at the apex; Both the stems and wings were glabrous.
The image to the right shows a winged stem, with a winged branch and a subdecurrent leaf base.
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